It looks like the Monaco GP is close to being postponed as well:
https://www.grandprix247.com/2020/03...lly-cancelled/
I know there were reports that the season could potentially be picked up at the Azerbaijan GP, but this is the first report I've seen that actually mentions Monaco being postponed. That being said, it seems that of all the races that have been cancelled so far, Monaco is the one that F1 is trying the hardest to reschedule given it's the prestige.