Well.... A friend who's an active member of the church and who's been close to the negotiations has told me that they are in fact transferring some of the air rights (they need the money to stay solvent and do necessary improvements). It sounds like it won't actually allow them to go much over the height permitted by the zoning laws (75 feet with the transfer, I think?). I believe that this sort of transfer is also "as of right," which means that it does not require approval of the Community Board (based on a conversation I had with a CB member).
(I'm personally very much in favor of development on that site, but glad that it won't be out of scale with other buildings in the vicinity.)
So far as I know the buildings north of ABC are not losing their leases, though I guess that could change any day. And I heard yesterday that the laundromat is closing, so perhaps it already has changed?