This is awkward. We just got a glimpse of DJ Hero's mixer, and now we see an entirely new peripheral for an entirely different game called Scratch: The Ultimate DJ (for Xbox 360 and PS3).
The peripheral, dubbed the Scratch Deck, is a collaboration between real mixer manufacturer Numark and electronics manufacturer Genius. It allows for realtime turntable mixing, while five promised-to-be-authentic Akai Pro MPC-style drum pads trigger various samples. A crossfader, USB mic and right/left-handed controls round out the options while the game allows players to battle it out "in distinctive urban environments."
Available this fall, I'm just praying that Harmonix announces a new DJ game of their own at E3 so my turntable trifecta pays out. [Press Release]