Well It is going to be interesting to see how they produce the double story line for Zekrom and Reshiram. One film about Zekrom and the other about Reshiram.
I personally think next will be the 3 Musketeers + Keldo, Then Genesect must have a film, maybe about it's past.
Spoiler for American's who don't want to know what might happen.
Originally Posted by arcemegus
Then Elgyem and Beeheyem might get a special since they're alien Pokémon.
There has been sketches released about a Future Episode involving these Pokemon, perhaps BW 33.
Pictures can be seen here: