How would you react to seeing just Eevee get a Mega Evolution in XY?
It'd be interesting to see what kind of design they could think off, but I'm not quite sure how I'd react to it. Surprised probably, considering there wouldn't really be much to it. I mean, they wouldn't be able to change its typing, as that would kinda break the entire eeveelution pattern. I know it's not an actual evolution, but still, there's not really any other type that would fit with Eevee, so I think it'd make more sense for the eeveelution to each get their own mega evolution, but all cases are highly doubtful. Eevee is representative of evolutions, but I think mega evolutions is something it should stay away from, as it just doesn't fit into the pattern of the Pokemon that are currently rumoured to get mega evolutions. So yeah :p
Does anyone think they might release another Eeveelution to coincide with Sylveon?
It's definitely a possibility, especially considering how Eeveelutions usually come in pair, but then again, I kinda doubt that's actually going to be the case. At first thought I kinda thought it to be unlikely, as I found it weird that they only revealed one eeveelution before release, if there were gonna be more in the game, but then again, Sylveon was pretty much there to advertise the Fairy type I guess, and because they knew people were gonna be seriously wondering about its type. But I kinda have a hard time thinking of, what type they'd cover. I mean, I see Flying or Fighting to perhaps be the most likely, because they're two of the few they have left, which I don't picture to be hard "Eevee-fying", whereas I can't really picture a cute Ghost or Rock type Eevee at all. And in any case, I expect Ghost & Poison eeveelutions and Rock & Steel eeveelutions to come in pairs, since it'd just make sense :p Then there's still Bug, Ground and Dragon though hnnggg