I just got a happy email from Panera Bread letting me know I can get free coffee every day in April. This is limited to one coffee a day and cannot be redeemed for espresso beverages. But hot or iced coffees are just fine.
This offer is loaded onto my Panera card and must be redeemed with the card (or by giving a phone number).
Check your email or your Panera accounts to see if you got the offer too.