Pretty much stable. And a pretty interface and animations/effects.
Node previews now possible too! Default setup of content types are fully possible. Note that it has only been tested with Page and Story content types. CCK support not included. For current full support you might want to hack into live.node.inc and the companion JS file.
If you have any concerns about it, feel free to contact me!
Adds working template files for books, movies, software, and other media types, fixes a number of minor bugs, and generally moves us much closer to a final release candidate.