A single phrase to destroy the Xenoblade rumour: If the NX had to do with Xenoblade, Monolith Soft would be involved (they have the rights for the Xeno series). As for the VR theory, maybe it could be true, after all, considering that Sony and Microsoft (I guess we can imply that HoloLens will have some connection with the X1 as well, since they share Windows's core (libraries/stuff used to make Windows run)) have their VR headsets, so maybe they're heading that way. Not to mention that the Virtual Boy was originally Nintendo's first try with VR (though it was a failure because of Ninty releasing it before the creator (Gunpei Yokoi, creator of the GameBoy) gave them the green light), so maybe they have learnt from their mistakes and they'll try again.