You'll notice
Useful3 Signal1
Bedrock credential chains like SSO and assume-role now see your configured region.
What's wrong with this entry?
Anonymous. No account, no email.
What
When resolving AWS credentials for Bedrock, Claude Code now passes a parent client configuration carrying the request handler and, where one is set, the region. Credential chains that need a regional endpoint, such as SSO or assume-role, can now resolve correctly instead of falling back to a default region.
Evidence
parentClientConfig
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.
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v2.1.224
Bedrock inference profile lookup failures are logged
Both mention bedrock
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v2.1.228
AWS request signing keeps query strings
Both mention bedrock
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v2.1.228
Bedrock requests go through middleware, and streams become real SSE
Both mention bedrock