Update README

Updates the README with the following changes:

* Update test workflow status badge to point to new workflow
* Indicate AVX512BF16 optimized path for CPU in support table
* Indicate macOS CPU support
* Indicate slow macOS MPS support
* Indicate AMD CDNA4/RDNA4 supported targets

Author: matthewdouglas

README.md

@@ -3,7 +3,7 @@
 <p align="center">
     <a href="https://github.com/bitsandbytes-foundation/bitsandbytes/main/LICENSE"><img alt="License" src="https://img.shields.io/github/license/bitsandbytes-foundation/bitsandbytes.svg?color=blue"></a>
     <a href="https://pepy.tech/project/bitsandbytes"><img alt="Downloads" src="https://static.pepy.tech/badge/bitsandbytes/month"></a>
-    <a href="https://github.com/bitsandbytes-foundation/bitsandbytes/actions/workflows/tests.yml"><img alt="Nightly Unit Tests" src="https://img.shields.io/github/actions/workflow/status/bitsandbytes-foundation/bitsandbytes/tests.yml?logo=github&label=Nightly%20Tests"></a>
+    <a href="https://github.com/bitsandbytes-foundation/bitsandbytes/actions/workflows/tests-nightly.yml"><img alt="Nightly Unit Tests" src="https://img.shields.io/github/actions/workflow/status/bitsandbytes-foundation/bitsandbytes/tests.yml?logo=github&label=Nightly%20Tests"></a>
     <a href="https://github.com/bitsandbytes-foundation/bitsandbytes/releases"><img alt="GitHub Release" src="https://img.shields.io/github/v/release/bitsandbytes-foundation/bitsandbytes"></a>
     <a href="https://pypi.org/project/bitsandbytes/"><img alt="PyPI - Python Version" src="https://img.shields.io/pypi/pyversions/bitsandbytes"></a>
 </p>
@@ -33,6 +33,7 @@ bitsandbytes has the following minimum requirements for all platforms:
 🚧 = In Development,
 〰️ = Partially Supported,
 ✅ = Supported,
+🐢 = Slow Implementation Supported,
 ❌ = Not Supported
 
 <table>
@@ -53,7 +54,7 @@ bitsandbytes has the following minimum requirements for all platforms:
     <tr>
       <td align="right">x86-64</td>
       <td>◻️ CPU</td>
-      <td>AVX2</td>
+      <td>Minimum: AVX2<br>Optimized: AVX512F, AVX512BF16</td>
       <td>✅</td>
       <td>✅</td>
       <td>❌</td>
@@ -70,8 +71,8 @@ bitsandbytes has the following minimum requirements for all platforms:
       <td></td>
       <td>🟥 AMD GPU <br><code>cuda</code></td>
       <td>
-        CDNA: gfx90a, gfx942<br>
-        RDNA: gfx1100
+        CDNA: gfx90a, gfx942, gfx950<br>
+        RDNA: gfx1100, gfx1200, gfx1201
       </td>
       <td>✅</td>
       <td>〰️</td>
@@ -114,7 +115,7 @@ bitsandbytes has the following minimum requirements for all platforms:
       <td>✅</td>
     </tr>
     <tr>
-      <td colspan="6">🪟 <strong>Windows 11 / Windows Server 2019+</strong></td>
+      <td colspan="6">🪟 <strong>Windows 11 / Windows Server 2022+</strong></td>
     </tr>
     <tr>
       <td align="right">x86-64</td>
@@ -150,16 +151,16 @@ bitsandbytes has the following minimum requirements for all platforms:
       <td align="right">arm64</td>
       <td>◻️ CPU</td>
       <td>Apple M1+</td>
-      <td>🚧</td>
-      <td>🚧</td>
+      <td>✅</td>
+      <td>✅</td>
       <td>❌</td>
     </tr>
     <tr>
       <td></td>
       <td>⬜ Metal <br><code>mps</code></td>
       <td>Apple M1+</td>
-      <td>🚧</td>
-      <td>🚧</td>
+      <td>🐢</td>
+      <td>🐢</td>
       <td>❌</td>
   </tbody>
 </table>