Probably referring to the upcoming standing bid they will have for, most likely, 145 LGA. That will allow someone to voluntarily upgrade without waiting for the next bid. That will be a two year seat lock. That being said, I seriously doubt there is ANYONE who is within a timeframe that is affected by the flow seatlock that hasn’t already upgraded. Could be an issue if someone was already a captain in CRJ or 145 and wanted to fly the 175 their last year at Envoy.