Nintendo just had a shareholders meeting yesterday and someone who was supposedly at that meeting said this:
“Nintendo plans to reveal the launch day and price at September, and not just the launch titles, also the titles for 2013 will be revealed at that time”
Now this is just a rumor right now, but if this person is to be believed then we may very well be hearing the price and release date for the Nintendo Wii U in September along with games that will be released in 2013.
Source: gonintendo.com