It's not official yet, but sources tell the THR that Tarantino's star-studded 9th film will have its world premiere during the fest -- possibly on May 21, which would make it 25 years to the day since "Pulp Fiction" debuted.
The prestigious French film festival runs May 14-25.
"I've been working on this script for five years, as well as living in Los Angeles County most of my life, including in 1969, when I was 7 years old," Tarantino has said of the film. "I'm very excited to tell this story of an L.A. and a Hollywood that don't exist anymore. And I couldn't be happier about the dynamic teaming of DiCaprio and Pitt."
"Once Upon a Time in Hollywood" opens in the U.S. on July 26.