I'm pretty sure they haven't released the vocal selections
"It's really crazy backstage. Just before the show started, Elaine Stritch got into a fight with stage hand, and then inexplicably started squeezing Hugh Jackman's buttocks. And by the time they had sedated her, she had punched out two cops and was holding Norbert Leo Butz hostage, threatening to kill one of his three names." -Nathan Lane
However, I'm think they're planning to. According to staff at Dress Circle, Lawrence O'Keefe (the composer) signed the rights over to a publisher in January.
It was said that Bat Boy, the complete vocal selection (arranged for piano, voice and guitar) will be on the shelves in approximatly 4 months, and that was mid-March, so might be released soonish. Or it could all be lies, decide for yourself.