From Electronic Arts:
With Rock Band for iPhone play solo, or push it to the limit with live Bluetooh multiplayer. Play with 2-4 band mates, earn unison bonuses, and save friends that drop out by activating overdrive. Enjoy the first full band multiplayer experience on the iPhone or iPod touch. Rock out on guitar, bass, drums or vocals to MP3-quality songs on easy, medium or difficult. Play solo, or start a band with friends from around the world. Jump into Quick play for casual sessions or take it on the road in tour mode. Use the in-game message center to check your band status and get push notifications when friends invite you to rock out. Play along with 20 legendary songs from great bands. Start out playing in grungy dives and work all the way up to stadium-rock stardom. Collect rewards and achievements that provide replay value and depth to even the most experienced rock band veterans.
What's new in this version:
Version 1.2.17 include adjustments and improvements, include bug fixes and increased stability.