People need to quit with the ideas that a new WiiU will show up. THey're release a new MK8 bundle right before E3. There is absolutely zero chance of a new WiiU or home console hardware this E3.
The only hardware likely to be shown is a redesigned/slim/etc 3DS and/or the QoL hardware hinted at previously.
Most of the rest are possible except the full extant of 14 with ZeldaU. I think they'll tease the game, but no way its coming in 2014.