This is all dependent on my financial situation but my plan is as follows...
Pick up a wii U this summer (if pikmin and wonderful 101 get released on time).
Pick up either a PS4 of 720 this fall. Which one will be dependent on their full exclusive line up for launch window.
Pickup which ever system I didn't get a year or 2 down the road.
Bare In mind I live with siblings who also game, so its highly unlikely I'd need to pay for all of this by myself.