The 100611rb3_e3_press.mov file you have requested: Media / Videos and Trailers / Official Videos / Rock Band 3 E3 2010 Trailer - 175.22mb is not available. Upload any files you want to share. This is the only information we could locate:
Harmonix has released an E3 trailer. This trailer features about a minute of live action playing where you get to see a brief glimpse of the keyboard. There is also some gameplay footage of three songs.