Thunderbolts recently underwent an official, but puzzling name change when Marvel introduced the asterisk to the title, but Kevin Feige has refused to explain the change.
Thunderbolts* is currently slated to release on May 5, 2025, after Captain America: Brave New World releases on February 14 of the same year. Story details are still relatively scarce, but it will feature a group of established MCU antiheroes joining forces under the purview of Valentina Allegra de Fontaine.
This at least rules out some theories about the sudden name change. Florence Pugh revealed in a video of the Thunderbolts* set that the title had made its way onto on-set furniture, which was the first indication that the change was the movie’s official title and not a placeholder. Feige’s confirmation cements this notion, and his refusal to elaborate offers further clues.