v9.0.0-rc.3

9.0.0-rc.3 (2026-05-04)

The EVENTS_INLINE_USERS configuration option (and its [Events] InlineUsers file equivalent) has been removed. The setting has had no effect since the move to context-aware event payloads; remove it from your configuration.

Add OpenTelemetry distributed tracing, exported over OTLP alongside metrics
Replace the ldlog logging infrastructure with Go's standard log/slog, with OTEL log export support
Expose the resolved environment ID to client-side SDKs via the X-LD-EnvId response header, including CORS exposure for browser SDKs
Cache AutoConfig state in the configured persistent store and initialize from it on startup, controlled by the new AUTO_CONFIG_CACHE_KEY and AUTO_CONFIG_CACHE_ENCRYPTION_KEY settings