Timesplitters 4 is underway.
No systems have been confirmed yet, however, 2 and 3 were both on the Gamecube. They were both the highest rated GC shooters on IGN. They has solid multiplayer, and one would imagine that online would come with their 7th gen effort. Now, with the Wii in so much better shape than the GC ever was, it's hard to imagine they'd suddenly not dev for Nintendo.
Especially with their recent flattery about the Wii's FPS potential.
Do you want Timesplitters 4?"Personally, as a gamer, I think it has definite potential (as a first-person shooter controller)," he said. "It can be done, you can get really great FPS controls with the Wii. I think it has huge potential there."