[Release] google/adk-python v2.6.3: v2.6.3

Google ADK Python v2.6.3 is a bug fix release that gates the --sandbox-launcher flag behind gcloud beta run deploy. This change addresses issue #6511 and ensures the sandbox launcher feature is only available through the beta command interface, improving stability and feature management.

Key Points

• •Bug fix: --sandbox-launcher flag is now gated behind gcloud beta run deploy
• •Prevents accidental use of sandbox launcher in stable gcloud run deploy
• •Addresses GitHub issue #6511
• •Improves feature stability by restricting beta features to beta command channel
• •Maintains backward compatibility for users not using sandbox launcher
• •Encourages users to opt-in to beta features explicitly

Workflow Diagram

Concepts