- Breaking changes: metric/tracer scope names now include full package name, minimum Go version bumped to 1.21, and removal of several deprecated config and component APIs.
- New features: Snappy HTTP request decompression, JSON content encoding for OTLP HTTP exporter, stricter retry validation, configopaque marked stable, and confmap packages split into separate converter and provider implementations.
- Deprecations: confignet address types, old configgrpc fields, and ScraperControllerSettings replaced by ControllerConfig.