Yes, WMS 3 will be having FEFO logic which means during your inbound replenishment WMS will capture what are the dates of the products information which are expiring first and this particular products will be assigned to the order if there is any allocation for the particular product which are having the most soonest Expiry details.
Note: During your inbound receiving of each expiry products, do check and input the correct Expiry information in the system.