In any case, yes Revit 2010 is available. Download, install and try out new features:
There are many exciting new features in this release, especially on data exchange (.adsk for instance), but what everyone will notice first is the ribbon UI. Loved by some, hated by many, I predict that it will indeed grow on you as time goes by. It better will, beacuse efforts to find a command called "Bring back my old UI", or something similar, have beared no fruits at all...