It is already available :
http://www.wowinterface.com/download...11127-RDX.html
(see sigg's post
http://www.wowinterface.com/forums/s...311#post298311 )
Apparently there is no way to load old configs, and I planned to spend a few hours this evening to look at how it works (hadn't much time to play wow this past few days :D)
BTW, from the very little I already played with it : the fact that it spams when you enter unknown zones is quite annoying, especially given that it doesn't know any of the zones in the beta :( . Also I still have to manually modify the BlizzFullDisable.lua file each time there is a new version because it still doesn't support "not disabling most of blizzard UI" by default, but I'm used to it by now :p