The next 2013 International Challenge for Black 2 & White 2 has been announced and it will place in April. It is the third International tournament that is open to all regions to participate against each other. There is three entry categories: Junior (born after 2002), Senior (born between 1998 and 2001) and Master (born before 1997).

2013 April International Challenge

Registration Period: April 12th, 2013 at 13:00 until April 18th, 2013 at 23:59
Tournament Period: April 19th at 00:00 until April 21th, 2013 at 23:59
Battle Type: Double Battle
Pokémon Restrictions: National Dex
Banned Pokémon: Mewtwo, Mew, Lugia, Ho-Oh, Chatot, Celebi, Kyogre, Groudon, Rayquaza, Jirachi, Deoxys, Dialga, Palkia, Giratina, Phione, Manaphy, Darkrai, Shaymin, Arceus, Victini, Reshiram, Zekrom, Kyurem, Keldeo, Meloetta and Genesect
Entry Gift: Liechi Berry and a Salac Berry

Our Pocket Monsters Black 2 White 2 Wi-Fi Competitions page has been updated with the details from this tournament.

Source: http://ja.pokemon-gl.com/about/sp/ic2013_04/