Actually, I suspect NX comes out next Fall, and Zelda's going to be its launch title. Really, what about that pathetic Nintendo Direct Nintendo just did would make you think the Wii U has ANY software releasing next year besides Fire Emblem x SMT? The sales certainly don't give me a reason to think it will, nor Nintendo's focus on 3DS over Wii U. Given Nintendo's pitiful Wii U support lately, there's no way that system lasts another year without a replacement. I think NX gets formerly announced at E3 2016 and then comes out that November.
The Wii U had a much stronger lineup then the 3DS at this E3. Not really sure where people keep getting the idea the 3DS is being supported more when most of it's games shown were either low budget sequels running off existing engines or already released Japanese games that are just being localized later. Combined with the fact last years E3 wasn't that impressive for the 3DS either, the signs point much stronger to them gearing up more for the NX being a new handheld next year then home console.
Once again, with mobile devices eating away at the traditional handheld market all around the world and especially in Japan, there's no way Nintendo is going to focus on a new home console that could eat away resources they'll need to make sure the next handheld is a success. This is like how back during the Wii era people were so sure the successor would be released in 2011, even though most of their major home console devs releasing games in 2009 and 2010 showed it'd be impossible to do that. The same things is happening right now where most of Nintendo's home console teams have been releasing Wii U games in 2014 and 2015.
The only way the NX can be a home console is if it's like the Wii where it's just a Wii U with more RAM put in it to allow for easier development since the teams can just reuse their Wii U engines with some minor upgrades and we all know how happy that will make some of you.
Anyone expecting the NX to be a home console that can rival the PS4/One in power and still be released in Fall 2016 is just setting themselves up for disappointment.