Agentgateway v1.6.0-alpha.1 introduces deprecation warnings

The agentgateway project has released v1.6.0-alpha.1, marking the pre-release phase for the upcoming v1.6.0. According to the project's GitHub release notes, this version includes numerous updates, fixes, and new features. Notably, the release introduces a louder warning for deprecated logging configurations, signaling that operators should prepare for changes in how logging is handled in future versions. Additionally, legacy LLM token environment variables have been dropped, which may impact deployments relying on older configurations.

Operators should review their logging configurations and ensure they align with the updated standards to avoid disruptions when upgrading to the stable v1.6.0 release. Furthermore, any workflows or scripts dependent on the legacy LLM token environment variable should be updated to accommodate its removal. This pattern of deprecating older features aligns with industry trends of streamlining configurations and improving security.