While John's role in "Kingsman: The Golden Circle" has not been revealed, his caption implies that he'll have a significant role. John writes: "It's been a long time since Tommy..." which refers to his last major film role. John starred as the Pinball Wizard in the rock opera "Tommy," which was released in 1975. Since then, John's film appearances have been mostly cameos and portraying himself. The image's text is also a play on one of John's more famous songs, "Saturday Night's Alright for Fighting."
John joins a cast that also stars returning lead Taron Egerton, as well as newcomers Channing Tatum, Julianne Moore, Halle Berry and Pedro Pascal.
The original "Kingsman" film was directed by Matthew Vaughn, who returns for the sequel, and based on the Marvel Icon comic book series by Mark Millar and Dave Gibbons.
"Kingsman: The Golden Circle" is scheduled for release June 16, 2017.