The official Pokémon movie website has updated with the trailer of the first movie of the Best Wishes! era. The trailer is exactly the same as the one that aired in the end of the 13th movie, showing Zekrom, Reshiram and Victini. The movie is set for release in japanese theaters in 2011, with no exact date being mentioned.
On a side note, according to the official website again, the release date of the Ruler of Illusions: Zoroark japanese DVD will be December 17th, 2010.