Studios can now be sued for misleading trailers.
Trailers are used to create hype and excitement as well as advertise films.
Basically, Trailers are commercial speeches meant to sell movies.
The ruling came from a lawsuit against Universal for "Yesterday" trailer.
Removing an actress in the final cut will deceive a significant portion of reasonable consumers.
Marvel Studios, known for altered trailers, is also subject to the ruling.
This could lead to more honest trailers for Marvel movies in the future.
Infinity War and No Way Home trailers had doctored footage too.
Upcoming Marvel trailers for Ant-Man and Guardians of the Galaxy are available online, but the next ones need to be careful.
The ruling applies to all movie studios, not just Marvel, but we know Marvel likes to do this.