And then Gamefreak righted the wrong with Black 2 and White 2. Using the correct Kyurem form colors for the correct version name.
So... Gamefreak had it planned all along!
I know there has been a bit of information listed somewhere that Yveltal (The bird) is exclusive to Y, and Xerneas (The deer) exclusive to X. But, what I'm hoping for is a Gold/Silver idea, where Lugia can be caught in Gold, but Lugia is a higher level, and then the opposite of that. Would be cool if they implemented that idea in X and Y.