Susan Stroman (Director/Choreographer) of Big Fish said at the 92y this evening there will be a Broadcast Recording of Big Fish in about two weeks. I'm assuming that means they will be recording the album. She also said there may be a possible tour of the show after its broadway run ends next month.
Well they were at over 50 performances with no news of a cast album, while shows like Bonnie and Clyde and Wonderland released it before they hit 30 performances, plus they announced their closing so a cast album was not 100%
Anything regarding shows stated by this account is an attempt to convey opinion and not fact.