The official announcement has happened along with the official site on RockBand.com going up, so here's the summary of the game and its features:
Take Control Of The Whole Band
Rock Band Blitz brings the excitement of a full band experience right into your hands! Music gaming pioneers Harmonix are introducing an all-new way to experience your favorite songs with an over the top, addictive, controller-based gameplay experience – no instrument peripherals needed! Rock Band Blitz comes bundled with over 20 songs, and works instantly with any of the 3500+ Rock Band songs. Get your controller, load up your favorite power-ups, and get rocking!
You Control The Action!
Rock Band Blitz is an all new way to experience your favorite Rock Band tracks - no instrument peripherals required: it's just you, the music, and a controller.
Insane Gameplay-Changing Power Ups
Take your scores to the next level with over-the-top, arcade-style power ups! Fire off the "Bottle Rocket" to explode gems in the distance, or chase down the "Flame Notes" for valuable bonus points. With over 10 unique power-ups, there are dozens of combinations to choose from for endless replayability!
Compete With Your Friends
Take your former bandmates on to prove your dominance on the best songs music has to offer! Grapple for position on the leaderboards and chase your friends’ scores as you play on the in-song dynamic leaderboard ladder!
The Largest Music Library in Gaming
Rock Band Blitz comes with over 20 songs new to the Rock Band franchise, from some of music's biggest artists! Rock Band Blitz is also instantly compatible with your existing Rock Band music library, including content from the Rock Band Music Store, as well as tracks exported from Rock Band, Rock Band 2, and more!
Added Value For Rock Band 3 Players
Rock Band Blitz's songs are also immediately compatible and playable in Rock Band 3, where players can experience these hits as a full band, using compatible guitar, microphone, drum, and keyboard peripherals!
The All-American Rejects – “Kids in the Street”
Avenged Sevenfold – “So Far Away”
Barenaked Ladies – “One Week”
Blink-182 – “Always”
Collective Soul – “Shine”
Elton John – “I’m Still Standing”
Fall Out Boy – “A Little Less Sixteen Candles, A Little More ‘Touch Me’”
Foster The People – “Pumped Up Kicks”
Fun. ft. Janelle Monáe – “We Are Young”
Great White – “Once Bitten Twice Shy”
Iron Maiden – “The Wicker Man”
Kool & The Gang – “Jungle Boogie”
Living Colour – “Cult of Personality”
My Chemical Romance – “Sing”
P!nk – “Raise Your Glass”
Quiet Riot – “Metal Health (Bang Your Head)”
Rick Springfield – “Jessie's Girl”
Shinedown – “Diamond Eyes (Boom-Lay Boom-Lay Boom)”
Tears for Fears – “Shout”
They explain here why they went with two gems instead of three from the Frequency/Amplitude games:
So if Blitz isn't like Rock Band, is it another skin on the classic Frequency gameplay? Not exactly. Notably, Blitz uses just two gems on each runway instead of three. "We went through a lot of prototyping, many different ways of beat matching with a controller," Nordhaus said. "That included three gems; that included some ideas of shifting the stick back and forth while you smashed gems, almost copying what you do with a guitar controller on the joypad controller.
"There were two reasons we settled on two: one was that the modern controller is better suited to two instead of three, as you mentioned with Frequency and Amplitude. But I think a more fundamental reason is that the choice was to let you focus a measure or two down the track as you play through and let you strategize about what your'e doing to do. And we found that if we took a little mental load off the beat matching and made it just a little bit easier to comprehend, you had the mental space to think about the strategy of what you're going to do to maximize your score."
Edited by FriskyTanuki, 18 July 2012 - 07:49 PM.