Kevin Feige has said that Peyton Reed's Ant-Man will remain similar to Edgar Wright's draft.
The Marvel president told Total Film that the movie will be "based very much" on the original scripting.
He said: "Edgar Wright, who I've known for many years, who wrote the draft with Joe Cornish - much of the movie will still be based very much on that draft and the DNA of what Edgar has created up to this point, but Peyton Reed has stepped in [to direct].
"Adam McKay, a very good writer is reworking parts of the script - not the entirety of the script, but some of it - and it's going to, we believe, come to life in the best version of Ant-Man that we could possibly make."
Feige also said that the studio is excited that Ant-Man is a lesser-known character for some people.
"Again, Ant-Man is a very important character for us," he said.
"We like that people don't necessarily know what it is, we like that it sounds sort of strange when you first hear the notion of Ant-Man, or a hero that can shrink, but he's a very key Marvel character: he's a key Avenger.
"He's an important character we want to bring into our universe and Paul Rudd, Michael Douglas and an amazing cast all set to start in August, we believe that we're on the road to the best version of Ant-Man that we could have."
Ant-Man is scheduled for release on July 17, 2015.