Overview
- The Russo brothers posted a plain green square on Instagram on Friday and tagged Robert Downey Jr., Marvel Studios, AGBO, and SXSW London, which many outlets and fans read as a deliberate Doctor Doom hint.
- Fans analyzed the image’s hex code and suggested 7/18/26 could be a trailer date, but that interpretation is speculative and has not been confirmed by the filmmakers or Marvel.
- Attendees saw a Doomsday trailer at CinemaCon in April, but that footage has not been released publicly and could be the same material the Russos might preview at SXSW.
- Reports of reshoots in London show the film remains in late-stage production, which helps explain why Marvel might limit public releases and use controlled festival or convention previews.
- The Russos are booked for panels at SXSW London on June 2, making that event the immediate focal point for any new footage while a wider online trailer release still looks likely to be timed to a larger promotional window such as San Diego Comic-Con.