We know, we know -- you're asking yourself, "Why would Microsoft release more peripherals? Just to add extra confusion to the Joystiq instrument compatibility matrix?" According to Microsoft, the mics are meant to assist in your living room rockstar efforts, and will retail this fall for an "estimated retail price" of $50. Meanwhile, the promise of Lips mics working in Rock Band 2 has yet to arrive and an asterisk in Microsoft's press release from earlier today indicates that these new mics won't work either without a title update. Does that mean we'll finally see the allowance of Lips' mics in RB2 when these new mics ship in the fall?