When the Occupational Upgrade preview went live it added two substantial changes to the way dupes worked and how they interacted with the world.
First was the introduction of jobs. Now jobs could be assigned to dupes and they would get bonus associated with that job, usually in the form of stat bonuses. The second was a revamped priority system. The priority range was changed from 1 through 9 to 1 through 5 but functioned on two levels. Dupes would now do tasks for their