The change will eliminate the need for Airmen who have 12 or more years of service to continue to reenlist by aligning their separation dates with their high year of tenure dates.

https://www.af.mil/News/Article-Display/Article/2003354/air-force-announces-nco-career-status-program-for-airmen-with-12-years-of-servi/ Secretary of the Air Force Public Affairs