Links don't seem to want to work.From the new scans - pokemarts only in pokecentres.
Reshiram;s ability is Turbo Blaze. Zekirom's is Terror Voltage. No details on what they do.
http://jun.2chan.net/31/src/1276271661294.jpg
http://jun.2chan.net/31/src/1276271605866.jpg
http://jun.2chan.net/31/src/1276271439845.jpg
http://jun.2chan.net/31/src/1276271345931.jpg
Dragon/Fire Reshiram
Dragon/Electric Zekirom
You can check the weather when you're choosing your attack.
I *think* it says you can set a screen to appear with the Y button, not sure what they mean.
Zoroa and Zoroark do not appear during normal gameplay. Zoroa will be obtained via transferring the celbii from the next movie to BW
Cool info though. Fire/Dragon it is for Reshiram.