Another data point. Was checking Royal Jordanian's website for some scheduled flights and had to first "accept" this notice before continuing to the website. No details but a sign of things to come?

"Mandatory safety requirements:

1. Passengers must undergo all medical checks required prior to check-in and/or embarkation
2. Passengers must wear masks, gloves and shoe covers during the flight.
3. Passenger will not be allowed to take cabin baggage with them on board and instead will be accepted as check-in baggage , this will be in addition to their normal baggage allowance.
4. Excess baggage will be collected according to normal rules.
5. Passengers can take small personal belongings (VAL, electronics, and medication).
6. Passenger shall strictly adhere to all verbal and/or written measures and instructions provided by the PIC and/or crew during flight, particularly in relation to health, safety, security and seat allocation or re-allocation;
7. Passengers should ensure that full and accurate contact information are inserted in the booking; failure to provide such information will result in offloading the passenger."