With the gaming industry's biggest expo, E3, going on, there have been tons of new announcements as well as some back and forth between competition. The Neversoft-developed Guitar Hero III revealed the former Guns N' Roses/current Velvet Revolver guitarist Slash would rock on a variety of unlockable guitars. Original Guitar Hero developer Harmonix then fired back with the announcement that it will offer not just hit singles for gamers to play on their upcoming Rock Band game, but entire full-length albums from multiple labels.

Finally, Harmonix revealed the Grammy-winning "Enter Sandman" from Metallica's 1991 Black album will be included in Rock Band's initial lineup shipping with the game. Announced at the end of EA's press conference, Kathy Vrabeck also made mention that a "substantial" number of songs from Metallica's catalog are slated to appear in the game.