It's ligit GameFreak will do it if there's Pokèmon Z.
No complaining they'll do it possibly Mega Chaizard Z maybe. GameFreak does what they want.
Gamefreak is going full YOLO in Gen 6. I love it.
I don't think they'll go with Z mega evolutions. If their was a Z version then it needs to keep some elements from X and Y so you can connect Pokemon Z to X and Y. It is easy to do Alternate forms but Mega Evolutions would be complicated for X and Y players because the Z mega evolutions wouldn't be programmed into X and Y.
I do think there'll be a X2 and Y2 instead though.
I'd rather burn cigarettes into my eyes.