Decaf 2.0 RC1 is now available for download from the plugins database!
There's not a lot of change from Beta 5, but for anyone who didn't catch the Beta 4 announcement, there's a "touch mode" for the Awesomebar which kicks in on small devices (I don't recommend trying it on a PC - use a real phone/small tablet to try it properly) and the whole theme is Bootstrap-based (and therefore responsive).
Any and all feedback is appreciated - either here, in a private message or (if it's a bug / feature request) on the Github issue tracker.