Sony and Marvel have officially parted ways when it comes to Spider-Man. To the dismay of MCU fans, Sony have revoked Marvel's ability to utilize Spidey in future MCU films and have instead decided to cross over the web-slinging hero with the rest of their own Spider-Man universe films. These films currently include the upcoming Venom sequel and Morbius, along with 2 more stand alone Spider-Man movies.
The confirmation came earlier this month from Sony Chairman and CEO Tony Vinciquerra, who reportedly said the following:
For the moment the door is closed. We had a great run on the Spider-Man movies. We tried to see if there’s a way to work it out… the Marvel people are terrific people, we have great respect for them, but on the other hand we have some pretty terrific people of our own. Kevin Feige didn’t do all the work.
Spider-Man was fine before the event movies, did better with the event movies, and now that we have our own universe, he will play off the other characters as well. I think we’re pretty capable of doing what we have to do here.
Due to the nature of Sony's rights to the Spider-Man character, Marvel can not stop Sony from crossing Spider-Man over with the rest of their Spider-Man universe characters. Apparently, a cameo involving Tom Holland's Spider-Man for the end of Venom, but Marvel did not want it included, so it was pulled from the final cut of the film.
With Marvel out of the way, expect to see Spider-Man show up in Venom 2, Morbius and any other related titles Sony produce.