Xbox World 360 writes: "The only surprising news regarding Rock Band 2's announcement is that development is almost complete. And anybody who splashed out on Rock Band will be pleased to know that its sequel will be a relatively inexpensive experience. All your current instruments are fully compatible, all your DLC works and, with 84 songs promised on the disc, there is a sizeable chunk of new content for your cash as well.
But you'll still probably want to splash out on the new kit. The sunburst guitars have sturdier strum bars and a built-in mic for automatic lag-calibration and headset-free singing, while the new drum kit comes equipped with quieter, velocity-sensitive rubber pads, a tough metal pedal and expansion slots to install optional cymbal pads (perhaps for Guitar Hero IV compatibility)."