I just saw a very long commercial for The Beatles Rock Band on VH1 Classic and it showed long bits of gameplay for Sgt. Pepper's Lonely Hearts Club Band, Birthday, and Here Comes the Sun. It says there's going to be a huge week on all things Beatles (a Week with the Fab Four or something like that) but I missed the date.
Edit: Thanks to Flanders for finding it!
Edit 2: The above videos were removed. Here are some alternate sources (thanks to DrFate)