It looks like the latest rumor has Nintendo releasing its next generation 'NX' console in July 2016, but here's the clincher: it will reportedly be slower than the PlayStation 4.
Nintendo's NX console will reportedly enter manufacturing in October, with DigiTimes reporting that Nintendo will begin pilot production on NX by October "at the latest". If this happens, we should see Nintendo do a huge reveal at E3 2016 in June next year. Once the production starts, other manufacturers will join in on the production process, which will definitely help.
But it's the hardware inside of the NX console that will have people talking, where rumors claim that the NX will only be as powerful as the PS4. Considering the new consoles aren't that powerful, this will be a huge disappointment. But, Nintendo could squeeze 1080p 60FPS out of its games if the hardware is juiced up, especially when compared to the Wii U.