I'd, uh, really like a 4th Edition? ::raises hand::
Seriously -- WotC has come up with whole catagories of new material, figured out how to design monsters that play well, and has just generally figured out the whole 'game design' angle more than at any other stage in D&D's history. My friends and I have already switched over to playing True20 for the time being because we're waiting for WotC to repackage D&D (3.5 revised, 4th edition, don't care) into a form that incorporates a lot of what they've learned in the last five years.
If not, or if they do a lousy job of it, True20 isn't going anywhere -- bring on some new D&D!