2.52.0a2

New Features ✨

Span Streaming

• feat(span-streaming): Add spans to telemetry pipeline, add span name and attributes (3) by @sentrivana in #5399
• feat(span-streaming): Add span batcher (2) by @sentrivana in #5398

Internal Changes 🔧

• test(mcp): Simulate stdio transport with memory streams by @alexander-alderman-webb in #5329

Other

• [do not merge] feat: Span streaming & new span API by @sentrivana in #5317