* The movie is still in early development. There's no official script, cast, or even a confirmed release date.
* Sony hasn't released any information on villains. The studio is keeping the plot and characters under wraps.
* Carnage has already appeared in the franchise. While it would be exciting to see him again, it's not necessarily a guarantee.
However, there are some reasons to believe Carnage could be a possibility:
* Carnage is a popular Spider-Man villain. He has a large fanbase and would likely draw in audiences.
* The multiverse is a popular theme in the MCU. This opens up the possibility of different versions of Carnage appearing.
* Tom Hardy voiced Carnage in Venom: Let There Be Carnage. He could potentially reprise the role.
Ultimately, we'll have to wait for official confirmation from Sony to know if Carnage will be in Spider-Man 4. Keep an eye out for news and trailers to see if any hints are revealed.