Releases/Support Levels

Mozilla products (Firefox, Firefox for Mobile Devices, and Thunderbird) are built from branches of the Mozilla codebase. These branches are supported differentially by our build, test and release engineering infrastructure according to the following descriptions:

Supported Product Branch

A supported product branch is one for which supported products

Unsupported Product Branch

• mozilla-1.9.0
• mozilla-1.8.1
• mozilla-1.8.0
• all others

Supported Product Branch

• mozilla-1.9.2
• mozilla-1.9.1

Tier 1 Development Branch

• trunk
• mobile-browser
• tracemonkey
• tryserver

Tier 2 (Project) Development Branch

• lorentz
• electrolysis
• places
• add-ons