Last updated: 26 Dec 2011
Official Thunderbird release notes usually only stress on new functionality added. The Rumbling Edge unofficial Thunderbird changelogs seek to provide a more detailed alternative.
Active branches (excluding Rapid Releases from v7 onwards):
- Gecko 1.9.2.x branch (Nov 2009 – )
Branches with discontinued development:
- Gecko 6 branch (Jul 2011 – Sep 2011)
- Gecko 5 branch (May 2011 – Aug 2011)
- Gecko 2.0.x branch (Nov 2010 – May 2011)
- Gecko 1.9.1.x branch (Nov 2008 – Dec 2010)
- Gecko 1.9.0.x branch (Aug 2005 – Nov 2008) – Except trunk nightlies and the occasional alpha/beta, no releases were made off this branch.
- Gecko 1.8.1.x branch (Jan 2006 – March 2010)
- Gecko 1.8.0.x branch (Jan 2006 – Dec 2007)
- Gecko 1.8 branch (Jun 2005 – Jan 2006)
- Aviary branch (May 2004 – Apr 2006)
–*–*–*–*–*–*–*–*–*–*–*–*–*–*–*–*–*–*–
Rapid Releases for v7 only, everything else will follow over time:
- What’s new in Thunderbird 7.0.1 … (Released on 30 Sep 2011) (Release notes)
- What’s new in Thunderbird 7 … (Released on 27 Sep 2011) (Release notes)
- What’s new in Thunderbird 7 beta (3rd update) … (Released on 20 Sep 2011) (Blogpost)
- What’s new in Thunderbird 7 beta (2nd update) … (Released on 06 Sep 2011) (Blogpost)
- What’s new in Thunderbird 7 beta … (Released on 26 Aug 2011) (Release notes)
- What’s new in Thunderbird 6.0.2 … (Released on 06 Sep 2011) (Blogpost)
- What’s new in Thunderbird 6.0.1 … (Released on 31 Aug 2011) (Blogpost)
- What’s new in Thunderbird 6 … (Released on 16 Aug 2011) (Release notes)
- What’s new in Thunderbird 6 beta (3rd update) … (Released on 10 Aug 2011) (Blogpost)
- What’s new in Thunderbird 6 beta (2nd update) … (Released on 02 Aug 2011) (Blogpost)
- What’s new in Thunderbird 6 beta … (Released on 20 Jul 2011) (Release notes)
- What’s new in Thunderbird 5 … (Released on 28 Jun 2011 – last release-specific changelog blogpost)
- What’s new in Thunderbird 5 Beta 2 … (Released on 22 Jun 2011)
- What’s new in Thunderbird 5 Beta – Comprehensive … (Released on 02 Jun 2011)
Gecko 2.0.x branch: (Official development carried over to Gecko 5 branch)
- What’s new in Miramar 3.3 Alpha 3 … (Released on 15 Mar 2011)
- What’s new in Miramar 3.3 Alpha 2 … (Released on 20 Jan 2011)
- What’s new in Miramar 3.3 Alpha 1 … (Released on 23 Nov 2010)
- What’s new in Thunderbird 3.1.17 … (Released on 20 Dec 2011) (Release notes)
- What’s new in Thunderbird 3.1.16 … (Released on 08 Nov 2011) (Release notes)
- What’s new in Thunderbird 3.1.15 … (Released on 27 Sep 2011) (Release notes)
- What’s new in Thunderbird 3.1.14 … (Released on 06 Sep 2011) (Blogpost)
- What’s new in Thunderbird 3.1.13 … (Released on 31 Aug 2011) (Blogpost)
- What’s new in Thunderbird 3.1.12 … (Released on 16 Aug 2011) (Security advisories)
- What’s new in Thunderbird 3.1.11 … (Released on 21 Jun 2011)
- What’s new in Thunderbird 3.1.10 … (Released on 28 Apr 2011)
- What’s new in Thunderbird 3.1.9 … (Released on 08 Mar 2011)
- What’s new in Thunderbird 3.1.8 … (Released on 02 Mar 2011)
- What’s new in Thunderbird 3.1.7 … (Released on 09 Dec 2010)
- What’s new in Thunderbird 3.1.6 … (Released on 29 Oct 2010)
- What’s new in Thunderbird 3.1.5 … (Released on 19 Oct 2010)
- What’s new in Thunderbird 3.1.4 … (Released on 16 Sep 2010)
- What’s new in Thunderbird 3.1.3 … (Released on 07 Sep 2010)
- What’s new in Thunderbird 3.1.2 … (Released on 07 Aug 2010)
- What’s new in Thunderbird 3.1.1 … (Released on 20 Jul 2010)
- What’s new in Thunderbird 3.1 … (Released on 24 Jun 2010)
- What’s new in Thunderbird 3.1 RC 2 … (Released on 09 Jun 2010)
- What’s new in Thunderbird 3.1 RC 1 … (Released on 29 May 2010)
- What’s new in Thunderbird 3.1 Beta 2 … (Released on 08 May 2010)
- What’s new in Thunderbird 3.1 Beta 1 … (Released on 10 Mar 2010)
- What’s new in Lanikai Alpha 1 … (Released on 03 Feb 2010)
Gecko 1.9.1.x
branch: (Official development ceased as of 3.0.11 release)
(There was no stable release of Thunderbird based on
Gecko 1.9.0.x)
- What’s new in Thunderbird 3.0.11 … (Released on 09 Dec 2010)
- What’s new in Thunderbird 3.0.10 … (Released on 29 Oct 2010)
- What’s new in Thunderbird 3.0.9 … (Released on 19 Oct 2010)
- What’s new in Thunderbird 3.0.8 … (Released on 16 Sep 2010)
- What’s new in Thunderbird 3.0.7 … (Released on 07 Sep 2010)
- What’s new in Thunderbird 3.0.6 … (Released on 20 Jul 2010)
- What’s new in Thunderbird 3.0.5 … (Released on 17 Jun 2010)
- What’s new in Thunderbird 3.0.4 … (Released on 30 Mar 2010)
- What’s new in Thunderbird 3.0.3 … (Released on 01 Mar 2010)
- What’s new in Thunderbird 3.0.2 … (Released on 25 Feb 2010)
- What’s new in Thunderbird 3.0.1 … (Released on 20 Jan 2010)
- What’s new in Thunderbird 3 … (Released on 08 Dec 2009)
- What’s new in Thunderbird 3 RC 2 … (Released on 01 Dec 2009)
- What’s new in Thunderbird 3 RC 1 … (Released on 24 Nov 2009)
- What’s new in Thunderbird 3 Beta 4 … (Released on 22 Sep 2009)
- What’s new in Thunderbird 3 Beta 3 … (Released on 21 Jul 2009)
- What’s new in Thunderbird 3 Beta 2 … (Released on 26 Feb 2009)
- What’s new in Thunderbird 3 Beta 1 … (Released on 09 Dec 2008)
- What’s new in Shredder Alpha 3 … (Released on 14 Oct 2008)
- What’s new in Shredder Alpha 2 … (Released on 12 Aug 2008)
- What’s new in Shredder Alpha 1 … (Released on 13 May 2008)
- What’s new in Trunk … (since 12 August 2005) | HOWTO: Use DOM Inspector to examine Thunderbird’s UI
Gecko 1.8.1.x branch: (Official development ceased as of 2.0.0.24 release)
- What’s new in Thunderbird 2.0.0.24 … (Released on 17 Mar 2010)
- What’s new in Thunderbird 2.0.0.23 … (Released on 20 Aug 2009)
- What’s new in Thunderbird 2.0.0.22 … (Released on 23 Jun 2009)
- What’s new in Thunderbird 2.0.0.21 … (Released on 18 Mar 2009)
- What’s new in Thunderbird 2.0.0.19 … (Released on 30 Dec 2008)
- What’s new in Thunderbird 2.0.0.18 … (Released on 19 Nov 2008)
- What’s new in Thunderbird 2.0.0.17 … (Released on 25 Sep 2008)
- What’s new in Thunderbird 2.0.0.16 … (Released on 23 Jul 2008)
- What’s new in Thunderbird 2.0.0.14 … (Released on 01 May 2008)
- What’s new in Thunderbird 2.0.0.12 … (Released on 26 Feb 2008)
- <- Results of Thunderbird 2 survey held from end-Oct to mid-Nov 2007: part 1, part 2, part 3 ->
- What’s new in Thunderbird 2.0.0.9 … (Released on 14 Nov 2007)
- What’s new in Thunderbird 2.0.0.6 … (Released on 01 Aug 2007)
- What’s new in Thunderbird 2.0.0.5 … (Released on 19 Jul 2007)
- What’s new in Thunderbird 2.0.0.4 … (Released on 14 Jun 2007)
- What’s new in Thunderbird 2 … (Released on 18 Apr 2007)
- What’s new in Thunderbird 2.0.0.0 Release Candidate 1 … (Released on 06 Apr 2007)
- What’s new in Thunderbird 2 Beta 2 … (Released on 23 Jan 2007)
- What’s new in Thunderbird 2.0 Beta 1 … (Released on 12 Dec 2006)
- What’s new in Thunderbird 2.0 Alpha 1 – Part 1 of 2 … (Released on 28 Jul 2006)
- What’s new in Thunderbird 2.0 Alpha 1 – Part 2 of 2 … (Released on 28 Jul 2006)
Gecko 1.8.0.x branch: (Official development ceased as of 1.5.0.14 release)
- What’s new in Thunderbird 1.5.0.14 … (Released on 19 Dec 2007)
- What’s new in Thunderbird 1.5.0.13 … (Released on 23 Aug 2007)
- What’s new in Thunderbird 1.5.0.12 … (Released on 30 May 2007)
- What’s new in Thunderbird 1.5.0.10 … (Released on 01 Mar 2007)
- What’s new in Thunderbird 1.5.0.9 … (Released on 19 Dec 2006)
- What’s new in Thunderbird 1.5.0.8 … (Released on 07 Nov 2006)
- What’s new in Thunderbird 1.5.0.7 … (Released on 14 Sep 2006)
- What’s new in Thunderbird 1.5.0.5 … (Released on 27 Jul 2006)
- What’s new in Thunderbird 1.5.0.4 … (Released on 01 Jun 2006)
- What’s new in Thunderbird 1.5.0.2 … (Released on 21 Apr 2006)
Gecko 1.8 trunk: (Eventually became Gecko 1.9 after 1.8.0.x and 1.8.1.x branched out)
- What’s new in Thunderbird 1.5 – Comprehensive … (Released on 11 Jan 2006)
- What’s new in Thunderbird 1.5 Release Candidate 2 … (Released on 21 Dec 2005)
- What’s new in Thunderbird 1.5 Release Candidate 1 … (Released on 05 Nov 2005)
- What’s new in Thunderbird 1.5 Beta 2 …………………… (Released on 08 Oct 2005)
- What’s new in Thunderbird 1.5 Beta 1 …………………… (Released on 10 Sep 2005)
- What’s new in Thunderbird 1.1 Alpha 2 …………………. (Released on 17 Jul 2005)
- What’s new in Thunderbird 1.1 Alpha 1 …………………. (Released on 01 Jun 2005)
Aviary branch: (Official development ceased as of 1.0.8 release):
- What’s new in Thunderbird 1.0.8 … (Released on 21 Apr 2006)
- What’s new in Thunderbird 1.0.7 … (Released on 30 Sep 2005)
- What’s new in Thunderbird 1.0.6 … (Released on 20 Jul 2005)
- What’s new in Thunderbird 1.0.5 … (Released on 14 Jul 2005)
Releases prior to Jun 2005 (Mostly without changelog)