Australia Covid live news update: Sydney lockdown to be extended by four weeks after NSW records 172 local cases; Victoria lockdown eases after 10 new cases

SA to exit lockdown at midnight; NSW records 172 local Covid-19 cases overnight; Victoria lockdown to ease from midnight after state records 10 cases; Queensland records no new cases overnight. Follow all the day's news

• Major delay in Novavax deal, with 51m doses not expected until 2022
• Covid tests being flown interstate as Sydney swamped by surge
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11.02am BST

With that announcement, here's a reminder of what was said earlier today.

The premier Gladys Berejiklian said this morning that August was likely the month when everyone comes forward to get the jab".

Related: NSW Covid update: 172 new cases as Berejiklian flags greater Sydney lockdown lasting into September

10.45am BST

Guardian Australia can now confirm the NSW premier is expected to announce on Wednesday morning a four-week extension to the greater Sydney Covid lockdown.

It's understood the crisis cabinet met on Tuesday night to finalise the plan.