At SKW, upgrade time are:

EMB- Once you have 2500 TT and 1000 121 Crew.
CRJ- Last class that ran had quite a few 18 monthers. I see that time holding firm with the new Midwest flying. We are running a CRJ upgrade class every 3-4.

Usually the RJ classes are a mix of Transition (5-10), Upgrade (20-30) and New Hire (30+). SKW can only train 70 RJ pilots at a time so these numbers are manipulated to achieve 70.