Here’s a new trailer I’ve found, featuring 30 out of the 45 songs that will be available on Rock Band Beatles.
The songs include:

I saw her standing there
Twist and shout
I want to hold your hand
Can’t buy me love
It’s been a hard day’s night
I feel fine
Eight days a week
Ticket to ride
Day tripper
Taxman
Paperback writer
Baby you can drive my car
Sgt. Pepper’s lonely hearts club band
With a little help from my friends
Lucy in the sky with diamonds
Birthday
I’m the walrus
Back in the USSR
Dear Prudence
While my guitar gently wheeps
Helter Skelter
Revolution
Within You Without You
Octopus Garden
Yellow submarine
Here comes the sun
Come together
Don’t let me down
get back

for a comple song list please go to our Beatles Rock Band Songs Page