As discovered by Bulbagarden moderator Bluesun, seemingly without any announcement, the same Togekiss has been released internationally. There have been no known advertisements for this promotion on the official Pokémon site.
To redeem the Togekiss, players must log on to the Pokémon Trainer Club, then access the mailbox via the envelope icon on the Trainer Card during the month of their birthday. From the mailbox, players must click on the letter entitled "Happy Birthday From Pokemon.Com", and a birthday party will be thrown by several Pokemon. Afterward, Togekiss can be claimed like any other promotion on the Pokémon Global Link website.