With production to begin soon on 20th Century Fox's Kingsman: The Golden Circle, casting is still under way on the action sequel, set for release on June 16, 2017. Today we have a new report from The Hollywood Reporter, which reveals music icon Elton John is in talks for a role. No details were given for the character he may play, but it sounds like the musician may be playing himself.

Regardless of his role, if a deal is finalized, Elton John joins a cast that already includes original Kingsman: The Secret Service stars Taron Egerton as Eggsy, Mark Strong as Merlin and Edward Holcroft as Charlie Hesketh, who was believed to have died in Kingsman: The Secret Service. They will be joined by new cast members Julianne Moore as the villain Poppy and Halle Berry as the head of the CIA. The sequel will move the action from London to the United States, although there still is much we don't know about the plot.

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A report from last month revealed that Eggsy (Taron Egerton) and Merlin (Mark Strong) visit the U.S., where they encounter Halle Berry's character and a "swaggering, sharpshooting cowboy" called Jack, played by the most recent casting addition, Pedro Pascal. That report also revealed the U.S. version of Kingsman is an organization known as the Statesmen, while we saw concept art of Julianne Moore's villainous lair, known as Poppyland. Director Matthew Vaughn previously teased that the sequel will involve a skiing sequence, a barroom brawl, robot dogs, one-armed henchmen and a sequence where the protagonists have to fend off "a massive f***ing frankfurter."

Last week, a new poster was released that teased Kingsman: The Secret Service star Colin Firth may return as Harry Hart, even though this character was presumably killed in last year's blockbuster. The poster featured a cryptic tagline that read "Reports of my death have been greatly exaggerated," a quote made famous by iconic author Mark Twain. We still don't have any exact confirmation that Colin Firth is returning to star, but director Matthew Vaughn did tease last year that he's trying to figure out a way to bring the actor back for this sequel.

Matthew Vaughn will direct from a script he co-wrote with Jane Goldman, who both wrote Kingsman: The Secret Service. The original movie was one of last year's surprise hits at the box office, taking in $128.2 million domestic and $414.3 million worldwide, from an $81 million budget. While best known for his musical endeavors, Elton John has previously been seen on the big screen as the Pinball Wizard in the 1975 classic Tommy, and he has played himself on The Simpsons and Spice World. He has also narrated the animated feature The Road to El Dorado, and produced the 2011 animated hit Gnomeo and Juliet and its upcoming sequel Gnomeo & Juliet: Sherlock Gnomes.