Changelog, Versioning, and MaintenanceLesson 6.4

Writing release notes that communicate value

release notes vs changelog, release notes audience, highlighting key changes, upgrade urgency communication, security release notes, performance release notes, marketing vs technical accuracy

Release Notes That Communicate Value

Release notes and changelogs serve different audiences. The changelog is a complete technical record for developers who maintain integrations. Release notes curate the highlights for a broader audience — developers evaluating whether to upgrade, and sometimes non-technical stakeholders.

Good Release Notes Structure

## Version 2.1.0 — Batch Processing + Performance Improvements

**Highlights**

This release adds batch processing support and cuts p99 response times
by 40% for large result sets.

**What's new**

- **Batch API**: Process up to 100 records in a single request with the
  new `client.batch()` method. See the [batch processing guide](#).

**Performance**

- Pagination cursor generation is now 40% faster for result sets > 1,000 items

**Bug fixes**

- Fixed a connection pool memory leak affecting long-running processes
  (reported in #234 — upgrade recommended for production deployments)

**Upgrading**

This release is fully backwards-compatible. Run `npm update your-package`.
No code changes required.

Communicate Urgency

Tell developers explicitly whether to upgrade immediately. Security fixes and memory leaks in production warrant "upgrade recommended." Minor features do not. Developers read dozens of changelogs — save them the decision work by stating it directly.