Roadmaps – SeaMonkey 1.0, 1.1, and 1.5

Here’s a pretty picture showing our roadmap with planned releases from the various branches. Generally, we’re planning to ship releases at about the same time as Firefox releases (i.e. SM1.1 when Fx2 ships, SM1.5 when Fx3 ships)

Large Version
Trunk + 4 branches seems like lot to be maintaining, but we currently don’t expect to ship anything from the 1.8 branch after 1.8.1 branches off it, and 1.8.0 branch will probably just be getting security fixes so it shouldn’t take too much work to maintain.
You may also want to look at KaiRo’s newsgroup post on mozilla.dev.apps.seamonkey, which has more details on our plans.