All three of the companies do this, It's nothing new honestly. Soon as they put out a console they start working on the next one. There not exactly building it soon as they launch but they have plans on how they want them to be. Wii U has been out for 2 years now and by the time they release it (which I think will be 2017) will have been 5 years which is probably the most your going to get out of current gen and next gen.