Emily Rogers had been talking about showing off first screens of the Wii successor last week and now she's provided something for people to look at. She has gone so far as to say that she has videos as well and that she'll be posting those soon too. I really think that these are fake since if you look closely you can see that the backgrounds in both games are photos of real places with the video game hud displayed over them.
I doubt that Nintendo would let anyone release screens of their direct properties over the net without an immediate "cease and desist" to whoever is posting them and would be be all over her with legal action. It would have been more believable if she posted screens from a Third Party game.
If these are real screen shots of Pikmin 3 and Endless Ocean 3 I hope Nintendo takes action against the posting of these (from the original source) since this would be ruining their E3 presentation. I will gladly take these down if needed.