In December 2017, The Walt Disney Company agreed to acquire assets from 21st Century Fox, including 20th Century Fox, for $52.4 billion. The following June, after a counter offer from Comcast worth $65 billion, Disney increased its offer to $71.3 billion. The acquisition would see the return of the film rights to Deadpool, and the X-Men and Fantastic Four characters to Marvel Studios, which would ''create richer, more complex worlds of inter-related characters and stories.'' In July 2018, Feige noted discussions had begun with Disney regarding any potential involvement Marvel Studios could have with Disney's streaming service, since Feige felt the service was ''an important thing for the company''.

Can we conclude that is fantastic four part of marvel cinematic universe?
no