Releases

Current Release

Firefox release notes.
Firefox ESR current release notes.

Thunderbird current release notes.
SeaMonkey current release notes.

Upcoming Releases

Upcoming release dates are listed at RapidRelease/Calendar.

Past Releases

The full list of Firefox release notes is available on mozilla.org.
The full list of Thunderbird release notes is available on mozilla.org.

Archive of 2001–2015 releases by date.