Last evening I read on Twitter two separate "tweets" about an hour apart and a bit later on a blog post that the update for Revit 2010 is now available. Great to see one is coming and the list of issues/items addressed shared too. Unfortunately it isn't actually available yet though, not for another week or so according to my sources. I'll post the information on the update once it is released.
In the meantime if you want to read the list of issues addressed you can read it HERE.
Hang in there...just a bit longer. Maybe it'll get posted sooner because of the early release of information?