I'm sure the runs will come open as existing pilots transition to type rated aircraft. The issue for what I assume you are asking (if you could be hired into one of those positions) would be if they will come open to direct hires. DFW tends to be a desirable location and often our ACP (First Officer to Captain) candidates take them, since they already have seniority. But we have had a couple of direct hires over the past several months. So my advice (if you have the hours for a part 135 captain) would be to go ahead and apply.