The market is evolving all the time. I don't see why they wouldn't move onto a new console if it suited their purposes. However as noone is privy to the private thoughts of Iwate etc its hard to say what exactly they want to do over the next few years. Just because the Wii is selling great doesn't mean they won't replace it with something newer. Consider the 3DS, the DS is still selling quite fantastic but they wanted to take advantage of new opportunities.
Tease.







