At Google I/O, CEO Sundar Pichai announced that Google would be taking user submitted names for the next version of Android, and also made it clear that the name would not be Namey McNameface. The loudest contingent of fans has been hoping that the name of Android N would be Nutella, but it appears that Android KitKat might end up being the only branded version of Android. There was also speculation that Pichai had opened up the naming to a vote in order to be able to name Android N after a South Indian dessert called 'Neyyappam', which had made some english-speakers worried about being able to spell the name. But, now we don't need to worry about that.
So, we know that Android N is officially Android Nougat. That means the only real mystery left is what version number will be assigned to the update. Given the major addition of splitscreen, it's expected to be Android 7.0, but there is still a small chance it will be Android 6.1. Luckily, we only have a couple more months to wait before finding out.