The FAA has been going around to the airlines and paying pilots holding 1st and 2nd class medicals to take a cognitive test. Only problem is they have little data on pilots in their 60's because nobody that age signs up to take it.

I am still sure most of the airlines are caught up on their hiring and there isn't a real pilot shortage besides nobody wanting to be a regional airline captain. All I read about is a bunch of freighters sitting around with more pilots than needed and couple mergers on the passenger side that usually result in a few years with no need to hire.