Okay, installed Fennec 0.8 and xulrunner 1.9.1b1pre... It works okay and didn't crash on me yet. The interface is stable, the tab interface is implemented and works, options, bookmarks, extension and plugin interfaces - all are working. Everything is slow, but working. Even the small virtual keyboard shows up on addressbar click, just not every time

Overall i like what i see - it is slow, but working... Probably can just improve from now on.

EDIT: There's even a new icon with the new Fennec logo

EDIT2: You can even enable the JIT compiler.

EDIT3: Okay, it crashed once, but overall much more stable, even with JIT (slightly faster with it too). No right click yet, no tab closing (couldn't find it), flash and media plugins are disabled by default, but you can enable them (crash warning ).