I think that after the PR disaster that was the 1D3 early on they're really gonna have to do something pretty incredible this time around.... I kinda feel like Canon is getting complacent or something, Nikon seems to be innovating left right and center with an awful lot of things (though obviously the 5DMKII is a piece of art itself) and it kinda feels like Canon is losing their edge a bit. Having said that, I doubt that Nikon will be able to release a new flagship before the 2010 olympics (here in Van, yay! Sort of :P) whereas Canon shouldn't have a problem (they just might have a problem making the camera actually work )