It was mentioned they intend to get 40 years out of each Saab. Essentially most of the fleet today has another decade left.
What happens next will likely depend on the government of the day it seems. Perhaps the government buys the fleet and Rex leases it? At least the taxpayer might get a return.
Whatever they opt for, it doesn’t come cheap. Even replacing the fleet with the new Cessna Skycourier would likely require half a billion.