http://www.serebii.net/index2.shtml
So, the shiny mega gengar event has been announced, starting October 13-26, and then from October 27 to November 16th, we'll finally be able to get Diancie! It'll be one less thing for japanese gamers to hold over our poor barbarian heads.
Apparently it's going to be a Gamestop serial code event, like the pinsir and heracross mega stones.
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