Personally, I see Delta starting up their own regional fleet here in a few years. They are keeping Comair's certificate active in order to do so. First Comair, next Pinnacle. I see an announcement coming out the next couple months about Pinnacle and the beginning of their closure as well. Hate to see that happen but very possible in my opinion.
Delta bean counters have quite a bit on the chopping block. Just today they pulled the contract for Regional Elite and issued the RFP for their handling. Regional Elite is closing up shop obviously. A lot of former Comair ground personnel went there and now they are going to be out of a job. Pinnacle lookout. I think you are next on the chopping block.
Comair's certificate is not being kept. It will be surrendered to the FAA on or before 12/31/12. It may not be sold or transferred.