Not a lot of time to mess with it yet, but I can say I like the new Movies and TV replacing the What's On function. Huge for me since I hate Comcast Xfinity uncustomizable guide - this at least lets me look at only what I'm interested in seeing listed.
Seems a bit sluggish overall, but can't be sure it's not my inconsistent Comcast signal. Also, have been unable to download Google Music app. Formatting a 4GB cruzer now to use for storage.
I never disliked the old Google TV. I like this one better. I'll get a chance to do some exploring tonight and tomorrow.
Overall, first glance: looks slick, like the new UI's, market is thin at the moment and the Google Music is driving me nuts. Seems like it hangs after clicking install and then won't finish. The app shows in My Apps, but won't open - error message says try later...? Will do a restart when I add the cruzer and try again. May also go to hard line Ethernet instead of wireless.
Also, after the update, immediately got notifications that Napster and Pandora did not download properly. Update was available in the market, and that fixed it. I'm not a noob, but I am pretty ignorant and skitchy about messing stuff up I don't understand, so take it easy on me...