A320neo successor will be based on sustainable aviation fuel: Airbus CEO
flightglobal.com
flightglobal.com
[1] https://www.channelnewsasia.com/singapore/air-tickets-sustai...
I don't see how requiring SAF would be any different.
I would be amazed if there was enough SAF available to reliably supply 1% of the world’s AirBus A320 fleet.