* Victoria reported just 14 new coronavirus infections along with a further five deaths, taking the state's toll to 761.
* Another person has died in NSW, with the state's COVID-19 toll now standing at 55.
* With the six additional deaths, the national figure stands at 849.
* Victoria's daily case number - the smallest since June 16 - also pushed metropolitan Melbourne's 14-day rolling average down to 36.2, well below the target of 50 for lifting restrictions.
* Premier Daniel Andrews said Victoria's numbers are cause for great optimism, and promised the state's budget will include "exciting, targeted, tailored and innovative" policies to help it rebound.
* Meanwhile, more than 100 live music venues across Victoria will share in $13 million in grants to help support on-stage and backstage jobs during the pandemic.
* The federal government has pledged almost $6 million in additional research and development for three Australian COVID-19 vaccines.
* An additional $305 million will also be put aside for families and childcare providers, largely in Victoria in light of its second-wave lockdown.
* NSW recorded two new cases, with a major contact tracing operation underway after a COVID-positive taxi driver worked while potentially infectious. The driver was one of two new infections recorded on Sunday.
* Premier Gladys Berejiklian also announced NSW workers were now eligible for paid pandemic leave under a deal struck with the federal government.
* Queensland recorded two new cases amid reports US actor Tom Hanks is back and staying at a luxury Gold Coast mansion rather than in a government-mandated quarantine hotel.
* Western Australia had one new case - a teenage boy in hotel quarantine who recently returned from overseas.
* September 14 to September 27 - stage four lockdown for Melbourne with some changes, including the curfew moving back an hour to 9pm.
* September 27 - NSW, Queensland and WA will start taking more international arrivals.
* September 28 - if average daily cases are 30-50 in metro Melbourne over the previous 14 days the city will move to the 'second step', including increased limits for public gatherings and a staged return to school for some students.
* October 26 - Tasmania's state of emergency due to expire. In Melbourne, the overnight curfew will be dropped if - over the previous fortnight - the average number of new cases falls below five and there are fewer than five cases from an unknown source.
* November - Victoria's hotel quarantine inquiry report due.
* November 23 - If there are no new cases for 14 days in Melbourne the city will move to the 'last step'. That includes all retail shops opening, public gatherings of up to 50 people allowed outdoors, and up to 20 visitors at a time allowed into a home.
AUSTRALIAN CORONAVIRUS NUMBERS
* There were 19 new cases in Australia - 14 in Victoria, two in NSW, two in Queensland and one in WA. Victoria announced an additional five deaths and NSW one.
* The national death toll is 849: Victoria 761, NSW 55, Tasmania 13, WA 9, Queensland 6, SA 4, ACT 3. (Two Queensland residents who died in NSW have been included in the official tolls of both states).
GLOBAL CORONAVIRUS NUMBERS
* Cases: at least 30,782,000
* Deaths: at least 957,000
Data current as of 1715 AEST September 20, taking in federal government and state/territory government updates, Worldometer and Johns Hopkins Coronavirus Resource Centre.
Australian Associated Press