Well, this thread is kinda going nowhere fast. No point having everyone post their apparent like/dislike for the Hoenn region here, and as stated before, all of this came from a website which can - and did - have its info edited by a customer/random person, and someone who makes the kinds of rumours which crop up with every major game and have, in my experiance, turned out to be fake. (After all, people who work for Nintendo and so forth are not allowed to tell people such info).
It's vaguely possible, but not given this 'info' at all, so am closing. It's only worth discussing if Coro Coro or something like that actually states it outright that it will happen.