Finally, after far too much time, the new add-ons manager is about to land in trunk nightlies. I am putting together the final patches to land now. The bit most people will see is the new UI so I guess I’ll steal Boriss’ image for you to look at here with the same caveats. What you see on trunk over the next few days is just the initial steps to switching to a redesigned UI and (more importantly from my point of view) a totally new extension manager backend that will make it easier for us to improve and build upon in the future. The changes are so large that it is important to get more people testing it now while it still looks fairly unpolished so we can pick up problems that we’ve missed.
Tomorrow (Friday) the QA team are holding a test day on the new add-ons manager, if you want to help test for issues you can join us in #testday on irc.mozilla.org
We are filing bugs with [rewrite] in the status whiteboard and blocking either the backend tracking bug or the UI tracking bug. So you can check the dependency tree to see what issues we already know about and plan to take care of. Please file bugs for anything else you see, especially when it is something that is wrong compared to Firefox 3.6.
There will be some add-ons broken in the new builds. This is fairly normal for any API update. As a general rule if some add-ons work but others don’t then contacting the authors of those broken add-ons is the best idea.
Developers of other applications may find things broken, ultimately this is unavoidable when changing APIs on this scale, please contact me if you need some help getting things working again.