Well more like a wish list than a rumor haha. I mean, it would be pretty hard for anyone to really have a compiled list of games that will be shown off at E3 and in what form, unless this was the person who is helping to set up the event in the first place. So that's rather unlikely.
More or less, seems as if someone is either playing off the usual stated rumors and adding their own twist, or do have insight and simply speculating on E3 possibilities given what they know about certain developer progress on the system thus far. Either way... it's speculative.
Most of the hardware and features seems to be pretty consistent along all the rumors, so I think we should start to consider these as more than jsut rumors, but software rumors have been all over the place for N6. I mean, I can't wait for Shenmue rumors to start flaring up as well haha. So I think we should pay attention to what is being stated about the hardware because it seems to be pretty consistent across the board, but software wise... well your guess is just as good as theirs haha.