There is a technical reason that they WONT make K3 for the xbox and the 360.
If you look on the back of the box for a reg. xbox game, you will see a graphics rating, which is 540i.
Look in the same place on the 360 box and you'll see 1080i.
When you take a game designed for the xbox and the 360 you suffer in the graphics department.
Take Blitz: The League for example. I personally own this game for the regular xbox. however they made it for 360 as well. The game will only run in 720i for the 360. This is because the developers only make a game once. In order to make it for two systems they would have to completely re-design the game after publishing the finished copy for the xbox. That requires 2-3 times the amount of time and labor costs.
I imagine that when k3 comes out, the graphics are going to be amazing and they aren't going to waste time and and money by making two copies of the game.
Peace out bitches!!!
Oh btw, any new news??