I'd say around the 6 month mark is a realistic timeframe to upgrade. Other than guys moving over to the Excel, I personally haven't seen many people leave. I am West coast based though. It might be a different story out East.
Either way, you won't have to count on attrition to upgrade. They're just getting ready to start accepting the next round of King Airs with the Fusion avionics installed & they're going to need lots of guys to fly them.

I assume pilots will be trained on both PL21 & Fusion and eventually the KA fleet will be entirely Fusion equipped - correct?

The Fusion training has started. Training is being done in Tampa.

The retail price of the upgrade is in the neighborhood of $350k. The current plan is to leave the PL21 aircraft as is, while taking delivery of new PLF aircraft. For the time being, a pilot will be on one or the other, with intermixed flying coming later.

Are any of the bases more understaffed than others? I currently live within 2 hours of a base but would be able to move to a more understaffed base. When those that applied sent in resumes did you include the base you were initially looking to be operating out of?

Staffing is somewhat divided by region. The bases within each region are on the job listing. I don't think that you'll ever hear if one is more understaffed than another.

Gotcha, thanks for the response.

Sometimes we get internal emails asking if we know anyone in a certain region looking to apply. The last one I saw was for the North West Seattle and Portland bases

How long ago was that email sent?

I'm looking to get hired in this region. I've applied through the orange site and through the email. Any tips on getting a call? I'm 135 current in the 350.