Prime Minister Scott Morrison is addressing the media.
Anyone travelling from Victoria to NSW after 4pm today - not living in the border bubble - must follow Victoria's stay-at-home measures, the NSW Health department has confirmed.
Border residents living on the NSW-side of the border who have been in Victoria do not have to follow the restrictions unless they have been outside the border bubble.
The border bubble is the same as the latest iteration.
Wodonga residents who work in Albury are able to continue to cross the border and attend work, the Acting Victorian Premier has confirmed.
"One of the other changes we've made is - subject to NSW and South Australia - but if you live close to the border and work interstate in NSW or SA, that person can continue to go to their place of work," James Merlino said.
"That's another difference to what we've had in the previous circuit breaker lockdown."
IN OTHER NEWS:
There will be a pupil free day tomorrow to allow schools to prepare for the return of remote learning.
Mr Merlino said it was necessary to lock down the entire state, not just Melbourne, due to the number of exposure sites outside the city.
The Albury Wodonga Health's Wodonga vaccination hub is no longer accepting walk-ins.
It comes as the Victorian government announced everyone over-40 can now be vaccinated.
Testing facilities are also experiencing high-demand.
Western Australia have closed its border to Victoria.
All people who have arrived from Victoria since May 16 will have to isolate until they record a negative test.
Winton Raceway has postponed this weekend's Winton Supercars Championship round. It's proposed it will be held on July 31- August 1.
"While regrettable, today's decision has been made to ensure the health and safety of all Supercars fans, staff and teams," Supercars said in a statement.
"Ticket holders for this weekend's event can either collect a full refund or hold on to their tickets for the Winton SuperSprint to run on the new dates.
"Supercars and the Benalla Auto Club will continue to ensure that all events are compliant with appropriate State, Territory and Federal regulations."
The entire state of Victoria will go into a seven-day lockdown from 11.59pm tonight.
It comes as 12 new locally acquired cases of COVID-19 were detected in the past 24-hours.
The total number of active cases in Victoria is 34.
Victorian residents over 40 can now be vaccinated.
In a statement Acting Premier James Merlino said "this kind of short, sharp action is effective in stopping this thing in its tracks".
There will only be five reasons Victorian are allowed to leave their home: food and supplies, authorised work, care and caregiving, exercise for two hours and with one other person, and getting vaccinated.
Exercise and shopping will be limited to a five kilometre radius.
Only one person per household can go shopping.
Facemasks must be worn inside and outside.
Private and public gathering are not allowed. Single person bubbles are allowed.
Childcare and kinder will remain open, but schools will close other than for children of authorised workers and vulnerable children.
Cafes and restaurants can only offer takeaway.
Gyms, hairdressers, community facilities and entertainment venues will be closed.
Non-essential retail can provide click-and-collect.
NSW Premier Gladys Berejiklian this morning warned residents against 'unnecessary travel' to Victoria, stating she was 'worried about the evolving situation'.
She foreshadowed that Victorians leaving the state would still be subject to the lockdown restrictions.
"There are 55 crossings of the border and we just ask everybody to do the right thing," she said.
"We've relied on the goodwill of our citizens during the entire pandemic. Let's not give up now.
"I'm worried about the evolving situation and of course we'll watch closely to see what the Victorian government announces this morning."
The list of COVID-19 exposure sites grew on Wednesday and now include venues in Ballarat, Bendigo, Axedale and Cohuna.
MORE TO COME