Rock Band may be currently cornering the full-band music game genre, but Activision and Neversoft have come out swinging, revealing loads of new info on the next installment in the franchise, aimed at unseating EA and MTV games' reigning rockstar simulator.

According to a cover-story spread in this month's issue of Game Informer magazine, Guitar Hero IV will introduce massive changes to the traditionally guitar-focused series, starting with a drum set addition meant to knock Rock Band's kit offstage.

The kit looks similar to Rock Band's, with its bass drum pedal and primary-colored circular pads (there are only three in GHIV), but that's where the similarities end. Activision's set – which the company claims is built more sturdily than the competition's -- adds two raised, wedge-shaped cymbal pads (used to activate star power), and each pad on the kit is pressure-sensitive. Itching to freestyle on the Rock Band drums after playing Weezer's "Say it Ain't So" for the 75th time? The GHIV drum career mode will let you do your thing during encores.

Although Activision didn't reveal specific details, the publisher told GI the next Guitar Hero axe will feature a "totally new input mechanic" in addition to the standard buttons. The game will still support current GH controllers, however. All instruments in the game, including the drum set, will be wireless.

Guitar Hero IV will also feature an expanded character creation system similar to those found in the Tony Hawk and Tiger Woods games -- think facial sliders and customized outfits, accessories and even reaction animations. Instruments will be able to be personalized, too. Licensed guitars are out, drums will have different wood grains available, decals can be created and you'll even be able to slap your band's name on the bass drum head.

Activision and Neversoft also told GI they will release more downloadable songs for Guitar Hero IV than they have for Guitar Hero III and plan to introduce a new music-creation tool. The new Studio Mode will let users not only freely jam over songs in the game but also create and upload their own original tracks. Using a vertically-scrolling grid, you'll be able to record rhythm, lead, melody, bass and drums (sorry, no vocals) and create loops and effects.

There's still no release date for Guitar Hero IV, and despite the wealth of info Activision has now shared about he title, there's still a lot we don't know. As long as we get to play a keytar, we'll be happy.