PSP. Is a dead man walking and 3DS will be the nail in the coffin.
DS sales proves that it has at least one more year of life. I doubt that nintendo will take the support very fast.
Wii, no way. They have been forecasting its death since 2007 and it still alive and kicking. WM has a lot of potential for it and it may make it last at least a couple of years more. The dismal 3d party support is nothing but the 3d partie's faulth itself.
I wonder why nobody added the xbox360 or the PS3. I am pretty sure that MS will announce the xbox succesor this 2011.