Mozilla has gone version number crazy, planning to push out a new version of the browser every six weeks. While this might be acceptable to home users, business and enterprise uses find this aggressive update cycle to be too much to handle. In an attempt to appease enterprise users, Mozilla has started talking about an Extended Support Release cycle that would see a browser supported for 42 weeks.
Mozilla will offer an Extended Support Release (ESR) based on official releases of Desktop Firefox. Releases will be maintained for seven release cycles (42 weeks), with point releases coinciding with regular Firefox releases.
To permit organizations sufficient time for testing and certification, the ESR will have a two cycle (12 week) overlap between the time of a new release and the end-of-life of the previous release. This will allow organizations to qualify and test against Aurora and Beta builds for twelve weeks leading up to the ESR, and an additional 12 weeks to certify and transition to a new ESR.
Here's how it will work note Mozilla's warning on version numbers):
Mozilla are making some early assumptions:
Firefox 8 or 9 will be the base code for the initial ESR version
Security bugs rated as 'Critical' and 'High' will be backported to the ESR code, allowing for updates
ESR will have its own update channel
The ESR will be released day-and-date with the Firefox release
ESR will not be marketed via mozilla.com other than on the Enterprise wiki page and/or staging servers
Firefox 3.6 will be end-of-lifed 12 weeks after the initial ESR is offered
But, Mozilla outlines some risks:
The ESR will not have the benefit of large scale testing by nightly and beta groups
ESR will be less secure than the regular release of Firefox, as new functionality will not be added at the same pace as Firefox, and only high-risk/impact security patches will be backported
There is the potential for confusion among Firefox users between the regular release of Firefox and the ESR
Maintaining the ESR will consume development resources that will impact the regular release of Mozilla products
The ESR is specifically targeted at groups looking to deploy it within a managed environment and is not intended for use by individuals, nor as a method to mitigate compatibility issues with addons or other software
Public (re)distribution of Mozilla-branded versions of the ESR will not be permitted
It'll be interesting to see if this is enough to appease business users.