There's heavy speculation that Cartoon Network has rights to both series of Vandread and is planning to air it on Toonami.
The source? A moderator of the Adult Swim message boards over at AdultSwim.com
Only problem is, many people don't trust the mod because he's the same one who said a few months ago that Home Movies on AS wasn't cancelled... and sure enough, soon afterwards it's last episode aired and no new episodes were ever ordered.
Another reason to be doubtful - last I heard, Geneon was pretty pissed at Cartoon Network over the way Cartoon Network:
a) put Lupin the 3rd at really nasty spots on Adult Swim
and
b) eventually cancelled it
and thus it's said that Geneon doesn't want to deal with CN anymore. Don't know if it's true, but it makes sense - Geneon really wanted Lupin to be sumthin' big here in the US, and when it crashed on CN, they got angry and left. Why else do you think Heat Guy J went to MTV?