Our changelog can be found at Changelog | Cursor - The AI Code Editor
We release updates using a gradual rollout so, by default, not everyone gets the update at the same time. This length of the rollout depends on how big the update is in terms of changes to the app but usually is 2-3 days for most rollouts.
We usually add release notes to our changelog once the rollout has made it to a certain portion of our users as if there is a bug early on, we want to catch it and fix it before the release notes are out for a broken update!
Hope this makes sense, but in short, release notes should be out by the time the update is widely available!