According to Emily Rogers, a Twitter user who's shown proof of inside knowledge regarding Nintendo's products in the past, the Nintendo NX prototype had a 6.2 inch 720p multi-touch screen, a dock station featuring two USB ports, and some involvement with Pokemon developer GameFreak.
It's unsure as to whether or not the physical details will translate into the final product, though she did go on to mention that GameFreak's rumored involvement with the console has some degree of truth behind it, leaving many speculating as to whether or not fans could see a Pokemon game finally translate to a home device. Emily Rogers' tweets can be found below:
It remains to be seen whether or not these details regarding the console will prove true or not. Until then, fans will have to wait for an upcoming announcement by Nintendo later this year, and see the device in person when it releases in March 2017.