Harmonix CEO Alex Rigopulos has confirmed that the Xbox 360 guitars included in the Rock Band bundles are indeed WIRED. There will be both wired and wireless versions available, but the bundles will come with a Wired Controller guaratneed. The CEO stated that the 360 bundle will come with a USB peripheral for peripherals to plug into, with te microphone and drum kit being wired on both the PS3 and Xbox 360 versions. Alex noted that the cost of wirless technology on Microsoft's sider is higher to so they had to go for the wired option in the bundle.
via maxconsole