Leaks, by definition, or something like that, are not credible until they're proven true, and in this case, only Game Freak know what the ,next games are, and for all we know, they could come out as soon as October, or as late as 2019. The names are not known until they're revealed, the region isn't known to anyone, and honestly, what makes you credible at all?
For all we know, you are just some fatass behind a screen, trolling us all. Either that, or you're Iwata himself.