Firaxis only started work on Wii and DS versions once it became clear the two platforms were a success.
The genre is of interest to Sid Meier because it offers "something a little different".
Firaxis focusing its attention on the Xbox 360, PS3 and DS versions of the game.
The Civ series is going in a slightly different direction.
2K has announced the development of Sid Meier's Civilization Revolution for next-gen consoles and handhelds.