PROMOTIONAL ITEM. In the past it came with Nintendo Power or some magazine, but then for now, wait for the next promotion... or visit a pokecenter. All promotional items automatically tell you to "wait for further news on it, or visit the center."
Or best of all, ignore it, and get yourself a AR/GS and get that soul dew and latios/latias and EV train them. =) And while you're at it, get that Kyogre too, and shark the EV in sp.atk to 252 asap. Trade it to another cartridge to fool Nintendo, and go to participate those tournaments against others with the most OU team you can ever make. Lol... of course if Kairi is also participating then best of luck.