There will be more upgrades. The airlines are hiring again. We've had several leave from 9L (Colgan) in the last few months alone.
We are also going to be getting another 15 Qs in the next year or so. And another 15 scheduled in 2013. Granted by the time we get any more on property we'll be Mesaba (XJ).
There will be more upgrades. They just might not be coming from Colgan alone once SLI goes through.

Just my .02