Battle Mode
Video 1:Metal Battle
http://media.xbox360.ign.com/media/899/899096/vid_2012291.html
Video 2: Cult Battle
http://media.xbox360.ign.com/media/899/899096/vid_2012286.html
IGN announced the game would feature a new multiplayer game mode called Battle Mode.[16] The mode puts a twist on the traditional Pro Face-off mode introduced in Guitar Hero II. Two players will face each other, trying to complete a song while successfully playing Star Power sequences to earn power-ups that can be used against their opponents. Players will be able to store 3 power-ups at a time and can activate them by tilting their guitars upward. If neither player fails the song, they will face each other in a sudden death segment. The power-ups will include:
* Broken string: One button on the opponent's guitar will not work until it is fixed (by rapidly tapping the button).
* Difficulty up: The opponent will play the song on an increased difficulty for a short duration of time (except for expert difficulty).
* Amp overload: The fret board will shake and appear blurry, making the scrolling notes difficult to read.
* Whammy bar: The opponent will have to use the whammy bar before he/she can play notes again.
* Steal power: This will steal your opponent's power-up.
* Double notes: The opponent will have to play twice as many notes for a short duration of time.
* Lefty flip: The fret board will be mirrored, requiring the player to switch their handedness on the guitar.
Video 3: Video Interview
http://media.xbox360.ign.com/media/899/899096/vid_2010911.html
Video 4: Slow Ride
http://media.xbox360.ign.com/media/899/899096/vid_2008400.html
Video 5: My Name is Jonas
http://media.xbox360.ign.com/media/899/899096/vid_2008394.html
In case anyone didn't know Songs so far, they've added 2 more to the list:
* "Barracuda" - Heart
* "Cherub Rock" - Smashing Pumpkins
* "Cult of Personality" - Living Colour
* "Even Flow" - Pearl Jam
* "Knights of Cydonia" - Muse
* "Lay Down" - Priestess
* "The Metal" - Tenacious D
* "My Name Is Jonas" - Weezer
* "Paint It, Black" - The Rolling Stones
* "Rock and Roll All Nite" - Kiss
* "Sabotage" - Beastie Boys
* "School's Out" - Alice Cooper
* "Slow Ride" - Foghat
In addition, bands confirmed to be contributing to the game include:
* Queens of the Stone Age
* Velvet Revolver
New Guitar Hero III guitar:

It's coming out for the 360, PS2, PS3 and Wii and possibly DS, although i don't know how they'll manage that...
I tell you what, that Battle mode looks sweet...