Filming on the untitled fourth Avengers film is currently underway, and while there's still plenty we don't know regarding the film, IMDB seems to suggest an Iron Man 3 actor is joining the Marvel Comics-based flick, as the site has reported that Ty Simpkins has joined the project.RELATED: Hulk Will Evolve From Thor: Ragnarok Through Avengers 3 & 4.The news of Simpkins' casting comes on the heels of a report that a casting call suggested a major death was likely in the upcoming film, with many speculating that Simpkins could be reprising his role as Harley Keener to pay his respects to Tony Stark. And while that is entirely plausible, especially given the contracts of the main Avengers are nearing their end, it's all merely speculation at this point. Still, the addition of Simpkins to the cast is sure to please many that have been eager for Marvel to bring him back as Harley Keener.

It's also worth noting that while IMDB can be edited by users, the news was revealed through their official Twitter account, much as it was when they announced that Letitia Wright’s Shuri, Danai Gurira’s Okoye, and Winston Duke’s M’Baku were all set to return for Avengers: Infinity War.

RELATED: Feige Says Avengers 4 Title Secrecy ‘Blown Out Of Proportion.’

Directed by Joe and Anthony Russo, Marvel’s Avengers: Infinity War — the next Avengers film — stars Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Samuel L. Jackson, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Pom Klementieff, Scarlett Johansson, Tom Holland and Anthony Mackie. The film opens May 4, 2018.