From Bulbanews, your community Pokémon newspaper.
Original Keldeo to be known as "Usual Forme"
Yesterday, it was announced that there will be a new Keldeo forme in Pokémon Black and White 2. Earlier today, @BulbaNewsNOW reported the name of this forme has been revealed. The forme will be known as "Resolution Forme" (かくごのすがた).
The previous forme will be known as the "Usual Forme".
More information on this topic is expected in the upcoming release of CoroCoro magazine, which will be available in a few days time.