Thanks to an image leaked earlier today, it seems that the fan favorite Pokemon, Gardevoir, will have a mega form. Whats interesting about Mega Gardevoir, is that she is significantly less flashy than the other Mega Pokemon thus far. This could mean that some of the currently unknown ones, might have a more modest approach or it could simply mean Gardevoir is the exception.
Unfortunately the leaker didn’t comment on whether or not Gallade would get a mega form, but it seems like a safe bet. Additionally, no word was given on if she would be exclusive to X (most likely) or Y either.