Horizon hasn’t hired anyone from outside their pilot development program since April when they decided to park all their Q400s, retrain their Q400 pilots on the E175, and effectively shrink their airline by 40-45% rather than compete for new pilots. Employment offers were rescinded and cadets were told that only two a month would be accepted because most of Horizon’s training would be busy retraining their current pilots. Horizon may have an updated contract but they haven’t hired pilots externally since April. That bulletin is more a confirmation than a change. I suspect the captain shortage will reach Horizon last. The Horizon pilot group answers an occasional question on here but is not very active.