The 33-year-old sustained a finger injury during the first One-Day International against India in Durban and subsequently missed the remaining five ODIs and the ongoing Twenty20 Internationals against the same opposition.
Cricket South Africa team manager Mohammed Moosajee confirmed the news on du Plessis while also revealing that pace bowler Dale Steyn is making satisfying progress from a foot injury.
"He [du Plessis] will start batting tomorrow and we are hopeful he will come through that and be available to captain the team for the first test against Australia," said Moosajee.
"Steyn is doing his running training and also increasing his bowling intensity.
“He will in all likelihood feature in the series against Australia, but the CSA medical team will want him to play some form of cricket before a test match.”
Ace batsman AB de Villiers and wicket-keeper Quinton de Kock, who sustained knee and wrist injury during the series against India are expected to be available for the first Test against Steven Smith's side.
The four-match Test series will be played between 1st Match and 3rd April with Durban, Port Elizabeth, Cape Town and Johannesburg being the venues.
© Cricket World 2018