Although the newest English-language trailer for Pokemon Black and White Version 2 reuses a lot of the footage from the games' last trailer, it does reveal that the games' North American release will be on October 7th.
Other information the trailer provides are the English names of the "rival" character and the Water Gym Leader, which are Hugh and Marlon respectively. The previous English-language trailer revealed the Poison Gym Leader's name to be Roxie.
Source: Pokemon
