Defending champion Williams, 36, gave birth to her daughter Alexa in September
and married Reddit co-founder Alexis Ohanian in a star-studded New Orleans wedding in November.
Last week Williams' coach, Patrick Mouratoglou, told CNN Sport that a decision would be made during an upcoming training session in Florida on whether or not the 23-time grand slam champion would make her comeback and compete in Melbourne, where play starts on January 15.
However, at a Tennis Australia event on Wednesday, the Australian Open's tournament director, Craig Tiley, was optimistic of Williams defending her Melbourne title and continuing in her quest to break Margaret Court's all-time singles record of 24 grand slams.
"She has got her visa, she has entered, she's practicing, and she probably just needs a bit more space for a bigger entourage," Tiley told reporters.
"There is no question she will be ready in our view.
"She wants to break the record owned by Margaret Court and it would be a significant accomplishment for her to be able to do that."
Currently ranked No.22 in the world, Williams told CNN in July she was intending to return to tennis -- echoing the words of her spokespeople -- and if the American does show up in Melbourne, it would come about four-and-a-half months after she gave birth.
The American won this year's Australian Open in the early stages of pregnancy and then stepped away from the game.