With the impending release of Quentin Tarantino’s love letter to the 1960s film business, “Once Upon a Time in Hollywood,” comes the inevitable discussion of what’s next. This time, however, these discussions and predictions have a more distinct air of import, given Tarantino’s long-held promise to retire after directing ten films. When counting the “Kill Bill” cycle as one film, “Once Upon a Time in Hollywood” is the director’s ninth release, leaving just one more project before his self-imposed retirement.

Taking this into consideration, there are a handful of unmade projects that haunt the annals of Tarantino’s career which are ripe for revival as his final film:

“Kill Bill Vol. 3”

Tarantino has revived speculation about a return of The Bride recently, mentioning in an interview with MTV that he still discusses the possibility with Uma Thurman occasionally. Far from confirmation, but it’s more concrete than a lot of the other projects the director has in his back pocket.

In the past, Tarantino has mused that a third “Kill Bill” would find Beatrix Kiddo and her daughter hunted by the daughter of Vivica Fox’s character from the first film, raised as a killer by other survivors of The Bride's revenge spree.

“Star Trek”

The sci-fi fandom realm was rocked when it was revealed that Tarantino had pitched an idea for a new “Star Trek” film to Paramount. Little progress was made on the idea, as Paramount struggled to get a direct follow-up to “Star Trek Beyond” off the ground and Tarantino moved on to other things. Still, the filmmaker has recently stated that the idea is very much alive and would be an R-rated “Pulp Fiction in space.” If there’s one thing left for Tarantino to do as a filmmaker, it’s a big-budget franchise sequel.

“Killer Crow”

In the aftermath of “Django Unchained,” Tarantino told The Root that he was developing “Killer Crow,” a WWII revenge film about a group of wronged African-American soldiers who “go on an Apache warpath and kill a bunch of white soldiers and white officers on a military base and are just making a warpath to Switzerland.” The pitch felt like a hybrid of “Inglourious Basterds,” “Django” and “Kill Bill.” Nothing has been mentioned of the film since the director moved on to “The Hateful Eight.”

“Django/Zorro”

In 2015, Tarantino and comic writer Matt Wagner released a seven-part comic book sequel to Django Unchained” that saw the bounty hunter crossing over with an older Zorro to free enslaved Native Americans in the American Southwest. Recently, Collider reported that comedian Jerrod Carmichael had been hired to adapt the book into a screenplay. Little else is known about the project at this time.

Sony and Columbia Pictures will release "Once Upon a Time in Hollywood" on July 26.

Quentin Tarantino
Director Quentin Tarantino poses with his Oscar for best original screenplay for "Django Unchained" backstage at the 85th Academy Awards in Hollywood, California, February 24, 2013. Reuters