What's Changed

Fixes

• Do not error when trying to evaluate annotations of private attributes by @Viicos in #10358
• Adding notes on designing sound Callable discriminators by @sydney-runkle in #10400
• Fix serialization schema generation when using PlainValidator by @Viicos in #10427
• Fix Union serialization warnings by @sydney-runkle in pydantic/pydantic-core#1449
• Fix variance issue in _IncEx type alias, only allow True by @Viicos in #10414
• Fix ZoneInfo validation with various invalid types by @sydney-runkle in #10408

Full Changelog: https://github.com/pydantic/pydantic/compare/v2.9.1...v2.9.2