chore(main): release 6.3.0

Author: bokelley

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "6.3.0-beta.10"
+  ".": "6.3.0"
 }

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## [6.3.0-beta.10](https://github.com/adcontextprotocol/adcp-client-python/compare/v6.3.0-beta.9...v6.3.0-beta.10) (2026-06-12)
+## [6.3.0](https://github.com/adcontextprotocol/adcp-client-python/compare/v6.3.0-beta.9...v6.3.0) (2026-06-18)
 
 
 ### Features
@@ -11,6 +11,7 @@
 
 ### Bug Fixes
 
+* **protocol:** pin AdCP 3.1 stable
 * **schemas:** stamp primary latest fallback caches with the requested prerelease version
 
 ## [6.3.0-beta.9](https://github.com/adcontextprotocol/adcp-client-python/compare/v6.3.0-beta.8...v6.3.0-beta.9) (2026-06-07)

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "6.3.0b10"
+version = "6.3.0"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}