The Proteas will embark on a short tour of Australia in August, playing three T20 Internationals and three One Day Internationals on the east coast.
Western Province successfully defended their domestic women's T20 title after being crowned champions following a 48-run victory against the Dolphins at Newlands on Sunday.
Afghanistan's star leg-spinner, Rashid Khan, has set a new milestone in T20 cricket, surpassing Dwayne Bravo to become the format's highest wicket-taker.
The fourth edition of the SA20 tournament is scheduled to begin on December 26 this year.
A brilliant maiden century from Reeza Hendricks helped the Proteas beat Pakistan by seven wickets in the second T20I in Centurion and win the series with a game to spare.
Travis Head led Australia to a record-setting win against Scotland in the inaugural Twenty20 International held in Edinburgh.