I've not seen it mentioned in this thread but it looks like they have implemented [shapeshift] for temporary shapeshift scenarios like the last boss in Draktharon Keep. I tested it the other day with a very basic action bar addon and it worked as a visibility macro conditional to make a new bar appear when you are shapeshifted.
A screen shot and my mini addon is in one of the last few posts in the nUI thread here :
http://www.wowinterface.com/forums/s...260#post283260