I think we've all heard those Dash 8 rumors....only time will tell I guess. It would be nice to see those on property (if for no other reason than an APU).
As far as the ACA situation, I really don't think DAL will stick with ACA long term. I know there is some debate going on regarding scope (a/c over 70 seats), but I can't imagine DAL would want to help ACA while they attempt to start yet another low cost carrier on the east coast.
There was a rumor on this board a few weeks ago about ASA possibly getting 25 more CRJ-200's. Who knows if it's true, but it would make sense that we would be a possible replacement for ACA in CVG. DAL probably wouldn't want to give CMR those routes, since it would leave them with a monopoly in CVG again.
ASA is in the perfect position to take on new CRJ's since we're going to be VERY fat on the CRJ when the E120 guys finish training this fall.
Let's hope something is in the works to grow ASA once again.