feat(changelog): add release notes for version 0.5.7 with new model and fixes

Author: rstrahan

CHANGELOG.md

@@ -5,6 +5,8 @@ SPDX-License-Identifier: MIT-0
 
 ## [Unreleased]
 
+## [0.5.7]
+
 ### Added
 
 - **Claude Opus 4.7 Model Support** — Added `anthropic.claude-opus-4-7` (and `:1m` context variant) across all `us`, `eu`, and `global` inference profiles. Includes unified template enums, UI model dropdowns, cachepoint support, EU region mappings, pricing entries, and documentation updates.
@@ -31,6 +33,12 @@ SPDX-License-Identifier: MIT-0
 
 - **BDA activation modal checking wrong version config** — Fixed the "Activate Version" flow incorrectly checking the *currently selected* version's `use_bda` flag (`mergedConfig?.use_bda`) instead of the *target* version being activated. This caused the BDA sync confirmation modal to appear (or not appear) based on the wrong version's configuration. The fix fetches and inspects the target version's actual config before deciding whether to show the modal. Also added a `fetchVersions()` refresh after BDA sync operations to keep BDA project ARN metadata up to date in the versions list.
 
+## Templates
+   - us-west-2: `https://s3.us-west-2.amazonaws.com/aws-ml-blog-us-west-2/artifacts/genai-idp/idp-main_0.5.7.yaml`
+   - us-east-1: `https://s3.us-east-1.amazonaws.com/aws-ml-blog-us-east-1/artifacts/genai-idp/idp-main_0.5.7.yaml`
+   - eu-central-1: `https://s3.eu-central-1.amazonaws.com/aws-ml-blog-eu-central-1/artifacts/genai-idp/idp-main_0.5.7.yaml`
+  
+  
 ## [0.5.6]
 
 ### Added
@@ -44,6 +52,7 @@ SPDX-License-Identifier: MIT-0
 - **Private Network Deployment** — Deploy the IDP Accelerator in fully private / air-gapped environments. New `AppSyncVisibility` parameter (`GLOBAL` | `PRIVATE`) makes the AppSync API accessible only from inside the VPC. All processing Lambda functions (21 across 3 templates) are conditionally placed in customer VPC subnets with an HTTPS-only security group. Includes a separate VPC endpoint CloudFormation template (`scripts/vpc-endpoints.yaml`) with 16 interface endpoints (AppSync, Bedrock, SQS, DynamoDB, S3, Lambda, SSM, KMS, STS, Textract, and more) and per-endpoint creation flags to skip pre-existing endpoints. All features are off by default — existing deployments are completely unaffected. See `docs/deployment-private-network.md`.
 
 - **Enhanced Information Panels** — Added comprehensive help content to the Information (ⓘ) panel on every page in the Web UI. Each panel now includes a feature summary, list of key capabilities, and "Learn more" links to relevant docs-site documentation pages. Created new panels for 8 pages that previously had none (Pricing, Capacity Planning, Custom Models, Discovery, User Management, Test Studio), and enriched the existing 7 panels with fuller descriptions and documentation links.
+  
 ### Changed
 
 - **Removed Claude Sonnet 4:1m and Sonnet 4.5:1m model variants** — The 1M context window beta for Claude Sonnet 4 (`claude-sonnet-4-20250514-v1:0:1m`) and Sonnet 4.5 (`claude-sonnet-4-5-20250929-v1:0:1m`) is being retired effective April 30, 2026. These `:1m` model variants have been removed from all enum lists, UI dropdowns, quota code mappings, pricing, and documentation. Users needing 1M context windows should migrate to Claude Sonnet 4.6 (`claude-sonnet-4-6:1m`), where the 1M context window is generally available (GA).