I really don't care when they release it. If it's fall 2016, great. I was going to buy either way and am plenty satisfied with my Wii U.
3DS is starting to feel very dated, so if NX is supposed to replace both machines under one unified umbrella (which I think probably is inevitable), then fall 2016 at least for the portable version is a good target.
Likely too E3 was to brief smaller Western third parties/studios on NX. I'd bet Japanese companies like Capcom already have been briefed and are maybe already planning games like Monster Hunter 5 for NX with Nintendo's internal studios already well underway into the development phase already.
3D Mario, the "real" Animal Crossing, and Mario Kart 9 are already in development for the NX I would guess.
