The Government is making a number of changes to temporary visa holder arrangements during the coronavirus crisis in order to protect the health and livelihoods of Australians, support critical industries, and assist with the rapid recovery post the virus.
There are 2.17 million people presently in Australia on a temporary visa.
https://minister.homeaffairs.gov.au/davidcoleman/Pages/Coronavirus-and-Temporary-Visa-holders.aspx