Here's a little bit of news I've heard about. It's now been officially confirmed that there will be at least one more Legendary Pokemon included in X and Y. The Rock/Fairy Pokemon known as Diancie. Take a look.

This distribution for this Pokemon is currently unknown but will be released at a later date. What is known about this Pokemon is that it's the result of the sudden transformation of the Rock/Fairy Pokemon known as Carbink. It also seems that large groups of Carbink tend to gather around Diancie. It's also been confirmed that Diancie will be one of the stars of the next Pokemon movie. I'll keep my eye out for more information as it come in. So stay tuned.