It could be an april fools joke! Just cuz its the 6th doesn't mean anything, last yr for an april fools joke I told one of my professors that I had a testicle removed, I never told him otherwise until I ran into him this january and he told me about a counseling group he was a part of and that I should go, he was pretty pissed when I told him the truth, especially since I couldn't stop laughing when I told him.
Anyway, this reputable source couldv'e done the same, and is waiting until E3 to say, FOOLED YA! Then again, Nintendo has always known how to do a lot with a little, so you can't really bank on the specs until we have comparative proof, which will also be hard seeing as how, judging from some developer comments, exclusives are gonna to be numerous for each system.