its out now but its like $80, also I read a review in some xbox mag that you still need to use a wired controller, to use the microphone or something like that.
http://www.totalconsole.com/store/comersus_dynamicIndex.asp where to buy
review of it.
http://www.maxconsole.net/?mode=content&itemid=242
Positives
+ Use USB or PS/2 Mouse and Keyboards on Xbox 360
+ Use Playstation/Playstation 2 controllers and peripherals on the Xbox 360
+ Bring turbo buttons to your Xbox 360 controller via the switch pull-downs
+ Strong, sleek and robust unit
+ Fully suitable for ‘Plug & Play’ with default setting
+ Easy to re-program buttons and create a custom key setting
+ Makes FPS games more enjoyable and a lot easier to play
+ Will have even the best of Live gamers running scared
+ Makes the transition from PS2 to Xbox 360 gamer seamless
Negatives
+ Requires a wired Xbox 360 controller for the device to be detected and programmed
+ No on-board headset support, however could be plugged into a wired controller, the wired controller still works as well as mouse and keyboard if plugged in
+ It may be a great adapter, but the price tag of approximately $80 is a little steep
+ Potential hardware compatibility issues
+ WASD movement setting not programmable
+ A creamy white shell colouring would’ve complimented the Xbox 360 better