Tom Cruise and Brad Pitt are also said to be in talks for two major roles in the film while a part has also been written for Al Pacino, who is yet to sign on.
The last time Leonardo and the two-time Oscar victor collaborated was in 2012 on Tarantino's critically-acclaimed western, which amassed $425.4M at the worldwide box office.
DiCaprio will play "an aging actor" evidently, though whether this is a fictional character created specifically for the story or an actual aging actor from 1969 is unknown. Variety reports that the structure will be similar to Pulp Fiction's with an ensemble approach.
Coincidentally, the 54-year-old filmmaker is also after the Wolf of Wall Street's former leading lady Margot Robbie to play murder victim Sharon Tate in the Sony flick slated for release in 2019. However, confirmation that Leonardo DiCaprio has taken a lead role in his next film is just cream on the strudel. The film set off a bidding war after Tarantino parted ways with long-time producers The Weinstein Company following the sexual assault allegations against Harvey Weinstein, with several studios clammoring to get their hands on Tarantino's script. Warner Bros.
Not only with this film reunite Tarantino and DiCaprio, it will also be DiCaprio's first role since winning the Oscar for getting eaten by a cartoon bear in The Revenant. Cruise, Robbie, and DiCaprio aren't the only big names linked to Tarantino's new film, either.
The film, whose working title is #9 (referencing Tarantino's ninth feature film as director), will be set in Los Angeles and will likely shoot in the summer of 2018.