Last week Whittaker, who was already the interim middleweight champion, was given the overall title after mixed martial arts legend Georges St-Pierre vacated due to health reasons.
The New Zealand-born Australian, Australasia's first UFC champion, has been scheduled to headline UFC 221 against American Luke Rockhold in Perth in February, which comes just under two months before April's Commonwealth Games.
Whittaker has already qualified for the 97kg wrestling division at the Games following his win at the Australian wrestling trials last month.
