Update 2021-07-20 (2): On Tuesday (20 July), Tasmanian authorities announced that people who have been in South Australia could only enter if they present an essential reason for travel. If permission to enter is granted, a 14-day institutional quarantine must be observed. This already applies to travelers from New South Wales and Victoria.
Update 2021-07-20 (1): According to media reports, the lockdown in the state of Victoria has been extended until at least 27 July. Additionally, on Tuesday (20 July), a seven-day lockdown was imposed in the state of South Australia.