Personally I cant see a few titles changing things for a machine over 12 months old already. Patterns of sales have been pretty consistant (thats to say machines that flop for 12 months have yet to go on and be a success) in the last few decades and I cant imagine that'll change.
In my humble opinion Xbox360, ps3 and Wii U will compete for the cheaper, lower end machine, and ps4 and Xboxone (ridiculous name btw) will fight it out for the high end.
Despite the similarities in the systems it appears Sony's marketing machine has been somewhat more effective in the hype stage so far. I personally wont ever buy a Sony Console again after the farces that the ps3 has endured (credit card details stolen, removing features I paid for after Id already paid), but that's just me, and probably a bit off topic
The one thing the Wii has going for it is that it as remotely interesting hardware, although thats hardly going to sell machines
I suspect the gaming pc will gain in popularity again this generation 'cos all the new machines are a bit mundane. (again, my opinion)
