No idea regarding Accelerated, but given Accelerated's bare-bones system I doubt there's going to be a very large book. It also can't simply build on the three DFRPG books, as it's a separate product.
The DFCO card game doesn't really have "info" in that way. It's a co-operative card game, with scenarios, characters and abilities based on the books.
Note: To be extra clear - everything (but the DFCO info) is speculation. I have no special knowledge, I'm not even a DF Accelerated play tester.