Well folks, it looks like it's finally time for us to get our next event Pokemon — it's the legendary Pokemon, Keldeo, who is the 647th Pokemon in the National Pokedex!
It will be available for your Pokemon Black and White versions in participating GameStop stores across North America from August 27 all the way until October 6 — a day before the release of Pokemon Black 2 and White 2! You can find any nearby Gamestop stores by using their store finder.
Players in the United Kingdom will be able to receive that same Keldeo in participating GAME and Gamestation stores across the UK. The Keldeo event on the other side of the pond goes from September 1 until October 11.
It seems that "some stores" are also participating in this event in Spain, France, and Germany, while Italy has been confirmed to get theirs at GameStop. Other European countries may end up getting it, but as of today, they have not been listed, so check back at Pokemon.comand view the site in your local language to see if there's any updates.
This is NOT a Wi-Fi event, and these are so far the only countries that have announced any promotion.
The Keldeo you receive comes at level 15 and holds a PP Max. You can take it to the Moor of Icirrus with Cobalion, Virizion, and Terrakion in your party as well and it will learn the secret move Secret Sword, which, when traded to Black 2 or White 2, allows it to transform into its Resolute Forme.