- Introduced hot reloading via `bun hot`, new process spawning APIs (`Bun.spawn`/`Bun.spawnSync`), streaming HTTP request bodies, and support for the `imports` field in package.json.
- Breaking changes: CLI argument parsing now passes through verbatim, `process.version` reports a fake Node version for compatibility, and `Bun.serve().hostname` now returns the hostname instead of the origin.
- Added extensive performance improvements (lower memory usage, faster timers, array/string methods, Blob handling, and `bun:test`), plus numerous bug fixes across the HTTP server, fetch, console, and other runtime features.
Community impact
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