I doubt they could have picked a better song to use to officially announce the release date for the PSP version of Rock Band. Even Kevin Smith agrees: Nothing brightens the day like the Jackson 5's "ABC". The fact that Rock Band Unplugged is pretty much a spruced-up version of the PlayStation 2 classic Amplitude - one of my favorite games for the system - makes the whole announcement that much sweeter.
Check out the new screens below, but I wouldn't pay too much attention to the character graphics. Now, more than ever, it's all about that fret board.