Thunderbird/Active Branches

There are several different branches active for Thunderbird development. This page aims to clarify the names and where they originate from.

General Name	Description	Nightly Code Name	Major version	Gecko Version	Repository	Core Repository	Notes
Trunk	Currently being build against mozilla-central for reference purposes only.	Shredder	3.4x	6.0a1	comm-central	mozilla-central	No nightlies are currently produced for this configuration.
Miramar	The main development branch. Virtually all patches must land here first.	Miramar	3.3x	5.0x	comm-central	mozilla-aurora
3.1	Last major release, now in security & stability cycles	Lanikai	3.1x	1.9.2x	comm-1.9.2	mozilla-1.9.2
3.0	Previous major release, now in security & stability cycles	Shredder	3.0.x	1.9.1x	comm-1.9.1	mozilla-1.9.1	End of life scheduled for December, will be shut down soon after.

Notes:

• There may be a 3.2 release. If so, this will be branched from the 3.1 builds (comm-1.9.2/mozilla-1.9.2). If there is a 3.2 release, the code name has not been decided.
• For more information about the comm-central repository, see this link.