Linda over at TabletPc2.com has just posted up a first look of the new Lenovo ThinkPad x61 Tablet PC.  She says it's most notable difference is the 'pure speed'.  Another observation she had from the get-go is the lack of "IBM" on the deck of the x61.  The Vista index score is a little higher on that machine over my x60t - the x61t rated a 3.4 under Desktop Performance for Aero , where my x60 rated a 3.2.  Gaming graphics got a bump from 3.1 to a 3.5, but I don't think you will be playing any hard core games still.  Her preliminary conclusion is:

The Lenovo X61 Tablet PC is a product of evolution and I have to say from where I'm sitting....its evolving very nicely.    If this is any indication of what the production units have instore for us...then you can expect a new Editors Choice Tablet PC in the near future.