See the official meeting agenda here.
The FCC has placed IBOC on the agenda for their regularly-scheduled Open Meeting on March 22nd. (next Thursday) They will be considering final rules for digital operation.
I doubt there will be any earthshaking news out of this meeting, EXCEPT...
that it will be decided whether or not to authorize nighttime AM IBOC, and under what technical restrictions.
March 22nd will be a red-letter day for the AM DXer. Stay tuned.