Victoria could remain in lockdown for another five months, according to government modelling.
The state's treasury predicts it will move from stage four to stage three restrictions in mid-September before progressing into Stage 2 restrictions around Christmas.
Victoria recorded 410 new cases on Tuesday, and another 21 deaths - making it the state's deadliest day on record.
Premier Daniel Andrews said 16 out of those 21 deaths can be linked to aged care outbreaks.
The unprecedented number of deaths takes the state death toll to 267 and 352 nationally.
Those who have lost their lives include two women and one male in their 70s, six women and five men in their 80s, five men and one woman in their 90s, and one woman in her 100s.
Mr Andrews added health officials were noticing a worrying rise in cases in regional Victoria in Geelong, Ballarat and Bendigo.
Victoria could remain in lockdown for another five months, according to government modelling. Pictured: Police pull a car over for a licence and permit check in Melbourne on Tuesday
Victorian Premier Daniel Andrews addresses a press conference on Wednesday. He said 16 of the 21 deaths can be linked to aged care outbreaks
Victoria has surpassed 400 cases for the first time since Saturday, when 466 cases were confirmed
202 cases linked to Bertocchi Smallgoods in Thomastown.
198 cases linked to Epping Gardens Aged Care in Epping.
182 cases linked to St Basil's Homes for the Aged in Fawkner.
153 cases linked to Estia Aged Care Facility in Ardeer.
129 cases linked to Kirkbrae Presbyterian Homes in Kilsyth.
123 cases linked to Melbourne Health Royal Park Campus.
115 cases linked to BaptCare Wyndham Lodge Community in Werribee.
107 cases linked to Outlook Gardens Aged Care Facility in Dandenong North.
97 cases linked to Estia Aged Care Facility in Heidelberg.
89 cases linked to Arcare Aged Care Facility in Craigieburn.
82 cases linked to Glendale Aged Care Facility in Werribee.
79 cases linked to Aurrum Aged Care in Plenty.
60 cases linked to the Woolworths Distribution Centre in Mulgrave.
59 cases linked to the Linfox warehouse in Truganina.
29 cases linked to Diamond Valley Pork in Laverton north.
21 cases linked to Hazeldene's Chicken Farm in Bendigo.
18 cases linked to Caroline Chisholm Catholic College in Braybrook.sonos sonos One (Gen 2) - Voice Controlled Smart Speaker with Amazon Alexa Built-in - Black read more
'They're very low numbers, but coming off such a low base, any additional cases