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Upstream Updates - Mon Apr 6 00:27:49 UTC 2026 #1498

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SIMD

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Closed

Agave Wiki

791585012d4cd148f8b24c54584efd7274fd7c69^..287a30a65199ed727056632ab063a59869b648c1

diff --git a/Feature-Gate-Tracker-Schedule.md b/Feature-Gate-Tracker-Schedule.md
index 9355b9f..8a18496 100644
--- a/Feature-Gate-Tracker-Schedule.md
+++ b/Feature-Gate-Tracker-Schedule.md
@@ -3,8 +3,8 @@ The version floor is the current minimum supported software version for a cluste
 
 || Testnet  | Devnet   | Mainnet Beta |
 | :-----: | :------: | :------: | :----------: |
-| Current floor | Agave: v3.1.8 <br> Frankendancer: v0.812.30108 | Agave: v3.1.7 <br> Frankendancer: v0.812.30108 | Agave: v3.1.0 <br> Frankendancer: v0.812.30108 |
-| Next expected floor * | Agave: v4.0.0-beta.0 <br> Frankendancer: v0.903.40004 | -- | -- |
+| Current floor | Agave: v4.0.0-beta.0 <br> Frankendancer: v0.902.40002 | Agave: v3.1.7 <br> Frankendancer: v0.812.30108 | Agave: v3.1.0 <br> Frankendancer: v0.812.30108 |
+| Next expected floor * | Agave: v4.0.0-beta.0 <br> Frankendancer: v0.903.40004 | Agave: v4.0.0-beta.0 <br> Frankendancer: v0.902.40002 | Agave: v3.1.7 <br> Frankendancer: v0.812.30108 |
 
 * These dates are tentative. Please keep an eye out for comms as the dates near
 
@@ -13,30 +13,30 @@ The version floor is the current minimum supported software version for a cluste
 ### Pending Mainnet Beta Activation
 | Key | SIMD | Agave Version | FD Version | Jito Version | Testnet | Devnet | Description | Owner |
 |-----|------|---------------|------------|--------------|---------|--------|-------------|-------|
-| Gx4XFcrVMt4HUvPzTpTSVkdDVgcDSjKhDN1RqRS6KDuZ | 0185  | v3.1.0 | v0.811.30108 | v3.1.0 | 910 | 1033 | SIMD-0185: Vote Account V4 | buffalojoec |
-| 5xXZc66h4UdB6Yq7FzdBxBiRAFMMScMLwHxk2QZDaNZL | 0321  | v3.1.0 | v0.806.30102 | v3.1.0 | 911 | 1034 | SIMD-0321: Instruction Data Pointer in VM Register 2 | buffalojoec |
-| 4WeHX6QoXCCwqbSFgi6dxnB6QsPo6YApaNTH7P4MLQ99 | 0083  | v3.1.7 | v0.811.30108 | v3.1.7 | 915 | 1036 | SIMD-0083: Relax intrabatch account locks | 2501babe |
-| rexav5eNTUSNT1K2N7cfRjnthwhcP5BC25v2tA4rW4h | 0444  | v3.1.7 | v0.811.30108 | v3.1.7 | 928 | 1043 | SIMD-0444: Relax program data account check in migration | febo |
-| ptokFjwyJtrwCa9Kgo9xoDS59V4QccBGEaRFnRPnSdP | 0266  | v3.1.7 | v0.811.30108 | v3.1.7 | 930 | 1044 | SIMD-0266: Efficient Token program | febo |
+| 4WeHX6QoXCCwqbSFgi6dxnB6QsPo6YApaNTH7P4MLQ99 | 0083  | v3.1.7 | 0.1 | v3.1.7 | 915 | 1036 | SIMD-0083: Relax intrabatch account locks | 2501babe |
+| rexav5eNTUSNT1K2N7cfRjnthwhcP5BC25v2tA4rW4h | 0444  | v3.1.7 | 0.1 | v3.1.7 | 928 | 1043 | SIMD-0444: Relax program data account check in migration | febo |
+| ptokFjwyJtrwCa9Kgo9xoDS59V4QccBGEaRFnRPnSdP | 0266  | v3.1.7 | 0.1 | v3.1.7 | 930 | 1044 | SIMD-0266: Efficient Token program | febo |
 
 ### Pending Devnet Activation
 | Key | SIMD | Agave Version | FD Version | Jito Version | Testnet | Devnet | Description | Owner |
 |-----|------|---------------|------------|--------------|---------|--------|-------------|-------|
+| 6sPDzwyARRExKH52LECxcGoqziH8G7SZofwuxi8Ja331 | 0312  | v4.0.0-beta.0 | 0.1 |  | 935 |  | SIMD-0312: CreateAccountAllowPrefund | joncinque |
+| 2GCrNXbzmt4xrwdcKS2RdsLzsgu4V5zHAemW57pcHT6a | 0458  | v4.0.0-beta.0 | 0.1 |  | 936 |  | SIMD-0458: Stop use static SimpleVote transaction cost | tao-stones |
+| zkexuyPRdyTVbZqEAREueqL2xvvoBhRgth9xGSc1tMN |   | v4.0.0-beta.0 | 0.1 |  | 937 |  | Re-enables zk-elgamal-proof program | samkim-crypto |
+| bn2oPgpkzQPT3tohMaAsMVGjhDmmDa4jCaVPqCFmtxM | 0284  | v4.0.0-beta.0 | 0.1 |  | 938 |  | SIMD-0284: Add little-endian compatibility for alt_bn128 | samkim-crypto |
 
 
 ### Pending Testnet Activation
 | Key | SIMD | Agave Version | FD Version | Jito Version | Testnet | Devnet | Description | Owner |
 |-----|------|---------------|------------|--------------|---------|--------|-------------|-------|
-| 2GCrNXbzmt4xrwdcKS2RdsLzsgu4V5zHAemW57pcHT6a | 0458  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0458: Stop use static SimpleVote transaction cost | tao-stones |
-| 6sPDzwyARRExKH52LECxcGoqziH8G7SZofwuxi8Ja331 | 0312  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0312: CreateAccountAllowPrefund | joncinque |
-| bn2oPgpkzQPT3tohMaAsMVGjhDmmDa4jCaVPqCFmtxM | 0284  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0284: Add little-endian compatibility for alt_bn128 | samkim-crypto |
-| bn1hKNURMGQaQoEVxahcEAcqiX3NwRs6hgKKNSLeKxH | 0302  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0302: Add alt_bn128 G2 syscalls | samkim-crypto |
-| 6aHuNsUmwSzCEMjrBzBCYaxHAyAcQBjVES92JigHBDuC | 0406  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0406: Maximum instruction accounts | LucasSte |
-| 2uxQgtKa2ECHGs67Zdj7dgmzn2w9HiqhdcedwCWfYzzq | 0387  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0387: BLS Pubkey Management in Vote Account | buffalojoec |
-| b1sgUiJ3qu7hYm3tNDyyqZNQd6gLGJmJppnLNa93PCQ | 0388  | v4.0.0-beta.2 | v0.902.40002 |  |  |  | SIMD-0388: BLS12-381 syscalls | samkim-crypto |
-| zkexuyPRdyTVbZqEAREueqL2xvvoBhRgth9xGSc1tMN |   | v4.0.0-beta.0 | v0.902.40002 |  |  |  | Re-enables zk-elgamal-proof program | samkim-crypto |
-| shredXP8xLjJWp1AWh3gAFsFn4GSH1vohhCMDHw5koU | 0337  | v4.0.0-beta.3 | v0.903.40004 |  |  |  | SIMD-0337: Markers for Alpenglow Fast Leader Handover, DATA_COMPLETE_SHRED placement rules | ksn6 |
-| 76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B | 0249  | v4.0.0-beta.0 | v0.903.40004 |  |  |  | SIMD-0249: Delay Commission Updates | joncinque |
-| VATtb1DepUwdPh5bFVasdtkbeDNsftZSRzr2aKpKWJA | 0357  | v4.0.0-beta.0 | v0.903.40004 |  |  |  | SIMD-0357: Alpenglow VAT implementation | AshwinSekar |
-| STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk | 490  | v4.0.0-beta.3 | v0.903.40004 |  |  |  | SIMD-0490: Upgrade BPF Stake Program to v5.0.0 | 2501babe |
-| vcmrbYbiMVKaq1snKP6eCacNDcr6qZvpCNUjmk6gxvZ | 0340  | v4.0.0-beta.TBD |  |  |  |  | SIMD-0340 validate chained block id | AshwinSekar |
+| bn1hKNURMGQaQoEVxahcEAcqiX3NwRs6hgKKNSLeKxH | 0302  | v4.0.0-beta.0 | 0.1 |  |  |  | SIMD-0302: Add alt_bn128 G2 syscalls | samkim-crypto |
+| 76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B | 0249  | v4.0.0-beta.0 | 0.1 |  |  |  | SIMD-0249: Delay Commission Updates | joncinque |
+| 2uxQgtKa2ECHGs67Zdj7dgmzn2w9HiqhdcedwCWfYzzq | 0387  | v4.0.0-beta.0 | 0.1 |  |  |  | SIMD-0387: BLS Pubkey Management in Vote Account | buffalojoec |
+| b1sgUiJ3qu7hYm3tNDyyqZNQd6gLGJmJppnLNa93PCQ | 0388  | v4.0.0-beta.2 | 0.1 |  |  |  | SIMD-0388: BLS12-381 syscalls | samkim-crypto |
+| shredXP8xLjJWp1AWh3gAFsFn4GSH1vohhCMDHw5koU | 0337  | v4.0.0-beta.3 | 0.1 |  |  |  | SIMD-0337: Markers for Alpenglow Fast Leader Handover, DATA_COMPLETE_SHRED placement rules | ksn6 |
+| VAT9huvhPjRN9cyrPytq9rwvEJ3J4ADtjdncgZRyANJ | 0357  | v4.0.0-beta.6 | 0.1 |  |  |  | SIMD-0357: Alpenglow VAT implementation | AshwinSekar |
+| STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk | 490  | v4.0.0-beta.3 |  |  |  |  | SIMD-0490: Upgrade BPF Stake Program to v5.0.0 | 2501babe |
+| vcmrbYbiMVKaq1snKP6eCacNDcr6qZvpCNUjmk6gxvZ | 0340  | v4.0.0-beta.6 | 0.1 |  |  |  | SIMD-0340 validate chained block id | AshwinSekar |
+| EDGMC5kxFxGk4ixsNkGt8bW7QL5hDMXnbwaZvYMwNfzF | 0459  | v4.0.0-beta.0 | 0.1 |  |  |  | SIMD-0459: Syscall Parameter Address Restrictions | Lichtso |
+| 7VgiehxNxu53KdxgLspGQY8myE6f7UokaWa4jsGcaSz | 0460  | v4.0.0-beta.0 | 0.1 |  |  |  | SIMD-0460: Virtual Address Space Adjustments | Lichtso |
+| CR3dVN2Yoo95Y96kLSTaziWDAQT2MNEpiWh5cqVq2pNE |   | v4.0.0-beta.0 | 0.1 |  |  |  | Account Data Direct Mapping | Lichtso |
diff --git a/feature-gate-tracker-schedule.json b/feature-gate-tracker-schedule.json
index 8247b6a..d4da9fd 100644
--- a/feature-gate-tracker-schedule.json
+++ b/feature-gate-tracker-schedule.json
@@ -3671,7 +3671,7 @@
         "v2.0.0"
       ],
       "Min FD Versions": [
-        "0.403"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -3715,7 +3715,7 @@
         "v2.0.0"
       ],
       "Min FD Versions": [
-        "0.302.2014"
+        ""
       ],
       "Min Jito Versions": [
         "v2.0.0"
@@ -3759,7 +3759,7 @@
         "v2.2.6"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -3781,7 +3781,7 @@
         "v2.2.8"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         "v2.2.8"
@@ -3801,7 +3801,7 @@
         "v2.2.15"
       ],
       "Min FD Versions": [
-        "v0.504.20215"
+        ""
       ],
       "Min Jito Versions": [
         "v2.2.15"
@@ -3821,7 +3821,7 @@
         "v2.2.1"
       ],
       "Min FD Versions": [
-        "v0.504.20215"
+        ""
       ],
       "Min Jito Versions": [
         "v2.2.1"
@@ -3841,7 +3841,7 @@
         "v2.2.6"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         "v2.2.6"
@@ -3861,7 +3861,7 @@
         "v2.2.0"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         "v2.2.0"
@@ -3883,7 +3883,7 @@
         "v2.2.6"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -3925,7 +3925,7 @@
         "v2.2.0"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         "v2.2.0"
@@ -3945,7 +3945,7 @@
         "v2.2.8"
       ],
       "Min FD Versions": [
-        "v0.603.20216"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -3967,7 +3967,7 @@
         "v2.2.7"
       ],
       "Min FD Versions": [
-        "v0.501.20212"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -3989,7 +3989,7 @@
         "v2.1.10"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -4011,7 +4011,7 @@
         "v2.2.0"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         "v2.2.0"
@@ -4034,7 +4034,7 @@
         "v2.2.0"
       ],
       "Min FD Versions": [
-        "v0.503.20214"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -4056,7 +4056,7 @@
         "v2.3.0"
       ],
       "Min FD Versions": [
-        "v0.701.20300"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -4076,7 +4076,7 @@
         "v3.0.0"
       ],
       "Min FD Versions": [
-        "v0.709.30000"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -4098,7 +4098,7 @@
         "v2.2.8"
       ],
       "Min FD Versions": [
-        "v0.708.20306"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -4120,7 +4120,7 @@
         "v2.3.0"
       ],
       "Min FD Versions": [
-        "v0.709.30000"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -4142,7 +4142,7 @@
         "v2.3.0"
       ],
       "Min FD Versions": [
-        "v0.709.30000"
+        ""
       ],
       "Min Jito Versions": [
         ""
@@ -4162,7 +4162,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.806.30102"
+        ""
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4184,7 +4184,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.806.30102"
+        ""
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4206,7 +4206,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.806.30102"
+        ""
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4228,7 +4228,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.806.30102"
+        ""
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4250,7 +4250,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.806.30102"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4272,7 +4272,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.806.30102"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4294,7 +4294,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.812.30108"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4307,9 +4307,7 @@
       ],
       "Testnet Epoch": 909,
       "Title": "SIMD-0332: Reduce ChaCha rounds for Turbine from 20 to 8"
-    }
-  ],
-  "Pending Mainnet Beta Activation": [
+    },
     {
       "Description": null,
       "Devnet Epoch": 1033,
@@ -4318,7 +4316,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.811.30108"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4340,7 +4338,7 @@
         "v3.1.0"
       ],
       "Min FD Versions": [
-        "v0.806.30102"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.0"
@@ -4353,7 +4351,9 @@
       ],
       "Testnet Epoch": 911,
       "Title": "SIMD-0321: Instruction Data Pointer in VM Register 2"
-    },
+    }
+  ],
+  "Pending Mainnet Beta Activation": [
     {
       "Description": "Remove the constraint that transaction entries cannot contain conflicting transactions.",
       "Devnet Epoch": 1036,
@@ -4362,7 +4362,7 @@
         "v3.1.7"
       ],
       "Min FD Versions": [
-        "v0.811.30108"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.7"
@@ -4384,7 +4384,7 @@
         "v3.1.7"
       ],
       "Min FD Versions": [
-        "v0.811.30108"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.7"
@@ -4406,7 +4406,7 @@
         "v3.1.7"
       ],
       "Min FD Versions": [
-        "v0.811.30108"
+        "0.1"
       ],
       "Min Jito Versions": [
         "v3.1.7"
@@ -4421,8 +4421,29 @@
       "Title": "SIMD-0266: Efficient Token program"
     }
   ],
-  "Pending Devnet Activation": null,
-  "Pending Testnet Activation": [
+  "Pending Devnet Activation": [
+    {
+      "Description": null,
+      "Devnet Epoch": null,
+      "Feature ID": "6sPDzwyARRExKH52LECxcGoqziH8G7SZofwuxi8Ja331",
+      "Min Agave Versions": [
+        "v4.0.0-beta.0"
+      ],
+      "Min FD Versions": [
+        "0.1"
+      ],
+      "Min Jito Versions": [
+        ""
+      ],
+      "Owners": [
+        "joncinque"
+      ],
+      "SIMDs": [
+        "0312"
+      ],
+      "Testnet Epoch": 935,
+      "Title": "SIMD-0312: CreateAccountAllowPrefund"
+    },
     {
       "Description": null,
       "Devnet Epoch": null,
@@ -4431,7 +4452,7 @@
         "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
@@ -4442,30 +4463,30 @@
       "SIMDs": [
         "0458"
       ],
-      "Testnet Epoch": "",
+      "Testnet Epoch": 936,
       "Title": "SIMD-0458: Stop use static SimpleVote transaction cost"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "6sPDzwyARRExKH52LECxcGoqziH8G7SZofwuxi8Ja331",
+      "Feature ID": "zkexuyPRdyTVbZqEAREueqL2xvvoBhRgth9xGSc1tMN",
       "Min Agave Versions": [
         "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "joncinque"
+        "samkim-crypto"
       ],
       "SIMDs": [
-        "0312"
+        ""
       ],
-      "Testnet Epoch": "",
-      "Title": "SIMD-0312: CreateAccountAllowPrefund"
+      "Testnet Epoch": 937,
+      "Title": "Re-enables zk-elgamal-proof program"
     },
     {
       "Description": null,
@@ -4475,7 +4496,7 @@
         "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
@@ -4486,9 +4507,11 @@
       "SIMDs": [
         "0284"
       ],
-      "Testnet Epoch": "",
+      "Testnet Epoch": 938,
       "Title": "SIMD-0284: Add little-endian compatibility for alt_bn128"
-    },
+    }
+  ],
+  "Pending Testnet Activation": [
     {
       "Description": null,
       "Devnet Epoch": null,
@@ -4497,7 +4520,7 @@
         "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
@@ -4514,24 +4537,24 @@
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "6aHuNsUmwSzCEMjrBzBCYaxHAyAcQBjVES92JigHBDuC",
+      "Feature ID": "76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B",
       "Min Agave Versions": [
         "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "LucasSte"
+        "joncinque"
       ],
       "SIMDs": [
-        "0406"
+        "0249"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0406: Maximum instruction accounts"
+      "Title": "SIMD-0249: Delay Commission Updates"
     },
     {
       "Description": null,
@@ -4541,7 +4564,7 @@
         "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
@@ -4563,7 +4586,7 @@
         "v4.0.0-beta.2"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
@@ -4580,134 +4603,156 @@
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "zkexuyPRdyTVbZqEAREueqL2xvvoBhRgth9xGSc1tMN",
+      "Feature ID": "shredXP8xLjJWp1AWh3gAFsFn4GSH1vohhCMDHw5koU",
       "Min Agave Versions": [
-        "v4.0.0-beta.0"
+        "v4.0.0-beta.3"
       ],
       "Min FD Versions": [
-        "v0.902.40002"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "samkim-crypto"
+        "ksn6"
       ],
       "SIMDs": [
+        "0337"
+      ],
+      "Testnet Epoch": "",
+      "Title": "SIMD-0337: Markers for Alpenglow Fast Leader Handover, DATA_COMPLETE_SHRED placement rules"
+    },
+    {
+      "Description": null,
+      "Devnet Epoch": null,
+      "Feature ID": "VAT9huvhPjRN9cyrPytq9rwvEJ3J4ADtjdncgZRyANJ",
+      "Min Agave Versions": [
+        "v4.0.0-beta.6"
+      ],
+      "Min FD Versions": [
+        "0.1"
+      ],
+      "Min Jito Versions": [
         ""
       ],
+      "Owners": [
+        "AshwinSekar"
+      ],
+      "SIMDs": [
+        "0357"
+      ],
       "Testnet Epoch": "",
-      "Title": "Re-enables zk-elgamal-proof program"
+      "Title": "SIMD-0357: Alpenglow VAT implementation"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "shredXP8xLjJWp1AWh3gAFsFn4GSH1vohhCMDHw5koU",
+      "Feature ID": "STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk",
       "Min Agave Versions": [
         "v4.0.0-beta.3"
       ],
       "Min FD Versions": [
-        "v0.903.40004"
+        ""
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "ksn6"
+        "2501babe"
       ],
       "SIMDs": [
-        "0337"
+        "490"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0337: Markers for Alpenglow Fast Leader Handover, DATA_COMPLETE_SHRED placement rules"
+      "Title": "SIMD-0490: Upgrade BPF Stake Program to v5.0.0"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B",
+      "Feature ID": "vcmrbYbiMVKaq1snKP6eCacNDcr6qZvpCNUjmk6gxvZ",
       "Min Agave Versions": [
-        "v4.0.0-beta.0"
+        "v4.0.0-beta.6"
       ],
       "Min FD Versions": [
-        "v0.903.40004"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "joncinque"
+        "AshwinSekar"
       ],
       "SIMDs": [
-        "0249"
+        "0340"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0249: Delay Commission Updates"
+      "Title": "SIMD-0340 validate chained block id"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "VATtb1DepUwdPh5bFVasdtkbeDNsftZSRzr2aKpKWJA",
+      "Feature ID": "EDGMC5kxFxGk4ixsNkGt8bW7QL5hDMXnbwaZvYMwNfzF",
       "Min Agave Versions": [
         "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.903.40004"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "AshwinSekar"
+        "Lichtso"
       ],
       "SIMDs": [
-        "0357"
+        "0459"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0357: Alpenglow VAT implementation"
+      "Title": "SIMD-0459: Syscall Parameter Address Restrictions"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk",
+      "Feature ID": "7VgiehxNxu53KdxgLspGQY8myE6f7UokaWa4jsGcaSz",
       "Min Agave Versions": [
-        "v4.0.0-beta.3"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        "v0.903.40004"
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "2501babe"
+        "Lichtso"
       ],
       "SIMDs": [
-        "490"
+        "0460"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0490: Upgrade BPF Stake Program to v5.0.0"
+      "Title": "SIMD-0460: Virtual Address Space Adjustments"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "vcmrbYbiMVKaq1snKP6eCacNDcr6qZvpCNUjmk6gxvZ",
+      "Feature ID": "CR3dVN2Yoo95Y96kLSTaziWDAQT2MNEpiWh5cqVq2pNE",
       "Min Agave Versions": [
-        "v4.0.0-beta.TBD"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "0.1"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "AshwinSekar"
+        "Lichtso"
       ],
       "SIMDs": [
-        "0340"
+        ""
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0340 validate chained block id"
+      "Title": "Account Data Direct Mapping"
     }
   ]
 }
diff --git a/v4.0-Release-Schedule.md b/v4.0-Release-Schedule.md
index cf675f5..029c76b 100644
--- a/v4.0-Release-Schedule.md
+++ b/v4.0-Release-Schedule.md
@@ -6,8 +6,9 @@ This is a tentative schedule for the stabilization and rollout of Agave <VERSION
 |Update master branch version to v4.1|2026-03-02|2026-02-26|
 |Testnet: Recommend nodes running Agave adopt v4.0|2026-03-09|2026-03-09|
 |Testnet: Activate several remaining v3.1 features|-|2026-03-16|
-|Testnet: Begin v4.0 feature activations|2026-03-16||
-|Devnet: Upgrade to v4.0|2026-03-23||
+|Testnet: Begin v4.0 feature activations|2026-03-16|2026-03-30|
+|Devnet: Upgrade 25% to v4.0||2026-04-02|
+|Devnet: Upgrade to v4.0|2026-03-23|2026-04-06 (Trending)|
 |Devnet: Begin v4.0 feature activations|2026-03-30||
 |Tag Mainnet-beta Upgrade Candidate (MUC) on v4.0 branch|2026-04-06||
 |Testnet: Begin cluster restart and downgrade/upgrade procedure|2026-04-13|| 

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