Brand New Day. Fresh reports claim the upcoming film will feature more MCU heroes than previously confirmed, hinting at significant character additions as the story expands. Rumor suggests Spider-Man: Brand New Day will have more Marvel heroes Scooper MyTimeToShineHello posted,

When the first round of photos from the Glasgow set of Spider-Man: Brand New Day found their way online, a red devil-like symbol on one of the armored vehicles led many fans to assume that Mr. Negative's criminal gang, The Inner Demons, would be introduced.

Brand New Day theory perfectly explains why the Hulk and the Punisher are in the MCU movie, as they should have a key role to play.