I know this post seems a bit stupid but it won't after you look at the picture again.

Seeing that Zekrom/Kyurem is on the Black side and that Reshiram/Kyurem is on the White, I am assuming that they are going to be switched up this time.

Black Kyurem will be in Pokemon Black 2, and White Kyurem will be in Pokemon White 2. However, in regards to things being "switched up", what could be a possible explanation is that the player catches Zekrom in White and Reshiram in Black, just as they did before, and must use either one to battle Black or White Kyurem, whose colour will match the game's name. I imagine the Black and White forms are assimilations of Zekrom or Reshiram into Kyurem's being, so the one which is assimilated would not appear individually in the version whose colour it matches, essentially preserving the way in which Zekrom and Reshiram were originally divided in Black and White.

/blockoftext