Launch Week 5 kicks off with the introduction of new Software Development Kits (SDKs) and enhancements to existing ones, including official support for Rust, PHP, and .NET languages. The updated JavaScript SDK now features tracing capabilities with the instrumentation Hook, enabling tracing from libraries back to the front end, along with support for Next.js server code source maps for comprehensive stack traces. Additionally, WebSocket messages can now be sent as traces to the highlight backend, allowing users to query and analyze them similarly to regular performance regressions. The announcement promises further developments in the coming days.