Unfortunately, the Bahrain and Vietnamese GP's have been postponed. The announcement was just confirmed by F1. Given how many domestic and international sporting event were cancelling their events, this was bound to happen.
This would make the Dutch GP the first round on the calendar, assuming it doesn't get postponed as well. Will be interesting to see which races get rescheduled and which ones are cancelled. As we've see , F1 doesn't have much wiggle room in terms of scheduling.
https://www.formula1.com/en/latest/a...c6Mg2kfgH.html
https://www.formula1.com/en/latest/a...uzVuu7lEa.html
By my count, only the Australian GP has been officially cancelled. The Chinese, Bahrain and Vietnamese GP's are all still in the running for a new date at some point in the future. Given how hard it was to find a new date for the Chinese GP, I'd wager to say all three will be officially cancelled at some point.
EDIT:
Here's a complete, up-to-date list of postponed races:
Australia
Bahrain
China
Vietnam
Canada
Rescheduled races:
Great Britain
Spain
Races that WILL NOT be rescheduled:
Australia
Monaco
France
Netherlands
Azerbajian
Singapore
Japan