I posted this in a couple of other threads but I'll recap too because I just got a 12/9 TP as well.

+The back case that comes with it now fits very tight (meaning, it makes it difficult to ut on), but does not squeak any more! It's a change in the case, not the phone.
+Keyboard slide feels better, keys feel more consistent, doesn't scrape on the keyoard
+Bottom keys aren't coming up

I come with good news, the screen is just as sensitive!