Some more songs for Guitar Hero III are out!! CHECK IT!
"3's and 7's" Queens of the Stone Age
"Barracuda" Heart (!!!)
"Black Magic Woman" Santana
"Cherub Rock" Smashing Pumpkins
"Cities on Flame with Rock and Roll" Blue Φyster Cult
"Cult of Personality" Living Colour
"Evenflow" Pearl Jam
"Go That Far" Bret Michaels Band
"Knights of Cydonia" Muse
"La Grange" ZZ Top
"Lay Down" Priestess
"The Metal" Tenacious D
"Miss Murder" AFI
"Mississippi Queen" Mountain
"My Name Is Jonas" Weezer
"The Number of the Beast" Iron Maiden
"One" Metallica
"Paint It, Black" The Rolling Stones
"Paranoid" Black Sabbath
"Raining Blood" Slayer
"Reptilia" The Strokes
"Rock and Roll All Nite" Kiss
"Rock You Like a Hurricane" Scorpions
"Sabotage" Beastie Boys (can I get a WTF HELL YEAH)
"School's Out" Alice Cooper
"She Bangs the Drums" The Stone Roses
"She Builds Quick Machines" Velvet Revolver
"Slow Ride" Foghat
"Suck My Kiss" Red Hot Chili Peppers
"Talk Dirty to Me" - Poison
"Through the Fire and Flames" DragonForce
"Welcome to the Jungle" Guns N' Roses
"When You Were Young" The Killers
Also apparently in GHIII you will have boss battles where you battle against Slash. Huh.
Sources :
PS3 Fanboy and
wikipedia