Gunn previously said he originally intended for Warlock to be a big part of Guardians of the Galaxy Vol. 2, but chose to hold off.
Gunn explains that this script - the final draft - represents the culmination of a process that started on the day the first Guardians of the Galaxy was released (August 1, 2014), leading to "dozens" of personal drafts and 9 formal drafts, before it was finally finished on October 2015 turned in to the studio. Gunn had this to say. Who knows how long it will take him to bake in that cocoon. However, despite knowing it would be fruitless, he still chose to move forward with the post-credit scene - showing a familiar cocoon with Ayesha name-dropping "Adam" - simply out of love for the character, who could still show up in the Marvel Cinematic Universe, just much later.
Gunn does sound playful in tone and he has done more than his fair share of teasing that Warlock will be heading to the MCU.
"We nearly didn't include the Adam Warlock scene because he was definitely not in [Avengers: Infinity War] or [Avengers 4], and we had no plans for him in general", Gunn said.
Director James Gunn, a perennial project-updating presence on social media, followed through on a promise to make the Vol. 2 screenplay available online for fan consumption by tweeting a PDF of his 140-page movie script.
"I awoke with a vision of the Stakar Ravagers scene in my head and couldn't stop thinking about it for days. We nearly didn't include the Adam Warlock scene because he was definitely not in Avengers 3 or 4 and we had no plans for him in general".
Looking forward to Vol. 3, Gunn said Adam Warlock isn't necessarily going to feature, claiming that "the time must be right'". It's easy to see why fans want to see him in the MCU, but it looks like the studio has to figure out what they want to do with the cosmic character. Avengers: Infinity War is slated for a May 4, 2018, release. James Gunn had this to say.