API Changes

• grpc: stabilize WithConnectParams DialOption (#4915)
  • Special Thanks: @hypnoglow

Behavior Changes

• status: support wrapped errors in FromContextError (#4977)
  • Special Thanks: @bestbeforetoday
• config: remove the environment variable to disable retry support (#4922)

New Features

• balancer: new field Authority in BuildOptions for server name to use in the authentication handshake with a remote load balancer (#4969)

Bug Fixes

• xds/resolver: fix possible ClientConn leak upon resolver initialization failure (#4900)
• client: fix nil panic in rare race conditions with the pick first LB policy (#4971)
• xds: improve RPC error messages when xDS connection errors occur (#5032, #5054)
• transport: do not create stream object in the face of illegal stream IDs (#4873)
  • Special Thanks: @uds5501

Documentation

• client: clarify errors to indicate whether compressed or uncompressed messages exceeded size limits (#4918)
  • Special Thanks: @uds5501