Here is what a regional airline's management recently leaked. By the end of 2018, only 3 regionals will fly for mother Dixie. 9E, OO and RP. Plan accordingly. No sources will be cited.

added: The order of operational importance will at that point be RP, OO and then a downsizing 9E as their 50-seaters die off. CRJ900s will fly as long as they can staff but CRJs all together will not be the regional flavor of papa doodoo.