Victoria recorded 113 new virus infections overnight as secret leaked documents revealed more bad news for the virus-stricken state.

Victoria has recorded 113 new infections on Thursday.

The Health Department also confirmed 15 more deaths, taking the state's death toll to 591.

It comes after top-secret leaked documents revealed Melbourne's dreaded stage 4 lockdown would continue for another two weeks after September 13.

Seen by the Herald Sun, a preliminary draft of the city's lockdown exit road map showed once current restrictions ended residents would be able to exercise for two hours a day, split up into two sessions.

It showed the Government was also thinking of allowing single people and single parents the right to have a nominated visitor at home.

But the 8pm-5am curfew would stay in place for a further two weeks, as would the restrictions on businesses.

Once that fortnight is up, on September 28, people would be allowed to socialise outdoors with five people from a maximum of two households as well as a phased reopening of schools.