Pulsar Release Notes
All release notes of previous versions are available at here.
Client Release Notes
The code repos of Java, C++, Python, and WebSocket clients are hosted in the Pulsar main repo and these clients are released with Pulsar. Their release notes of previous versions are parts of Pulsar release notes. You can check them out at here.
The code repos of Go, Node.js, and C# clients are hosted outside of the Pulsar main repo and these clients are not released with Pulsar. They have independent release notes in their repos and all of them are synced to this page.