The Swiss master, who has four Melbourne Park titles among his 17 grand slams, has never previously started the year in Brisbane and the announcement was billed as the "biggest in the history" of the event, which started in 2009.
Federer said, "I've always hoped that I could come there (to Brisbane), so I am happy we are all able to make it work".
"I'm not just coming there for the Australian Open, especially when I commit so early in advance, it's also to win in Brisbane", he adds.
Federer is the first player to be announced for the hardcourt tournament, and director Cameron Pearson said it was a coup.
"Roger Federer is a global superstar and arguably the most accomplished tennis player in history. His attendance at this event will be a legacy for future generations," Pearson said.
(with agency inputs)