How often do they update the MOS for the bear program?

there's no set time but it does change from time to time due to strength levels. You just have to check the milper messages. But the guys who run this forum do an outstanding job of posting new messages as SOON as they come out so just keep checkin

Usually every 4-6 months or so, but basically whattlpracer stated ... "it does change from time to time due to strength levels."