'Avengers 4' Gwyneth Paltrow Revealed a Spoiler

At the beginning of Avengers: Infinity War we see how Tony Stark and Pepper Potts, are preparing for their wedding preparations until Thanos and the Black Order complicates the things ending with the deaths of the half of the universe.

The film leaves the story unfinished, Gwyneth Paltrow, who interprets Tony Stark's girlfriend, gave indications of what could happen with the couple in Avengers 4.


This is what Gwyneth Paltrow said

"Pepper and Tony had a real long journey together" she says "She obviously starts as his dutiful assistant, and then the relationships evolves, and now this decade later they are married, and they have a child.Their relationship has evolved in all of the ways that great romances evolve."

In Avengers: Infinity War Tony dreams with Pepper Potts pregnat, there is where the billionaire returns to become Iron Man and save the planet from the threat of Thanos.
Apparently Avengers 4 develops in a few years after Avengers: Infinity War. With the victory of Thanos as only a bad memory, we would find the heros wanting to continue with their lifes, in the case of Tony Stark married and with a child.
All speculations will be finally resolved when on May 5, 2019, the Avengers will arrive at Avengers 4, the new, but not the latest, Marvel heros' adventures. We will have to wait a little less than a year to find out what happened to the Super Heros  after the Thanos massacre.

Probably this is just a consecuence of the "Fake Scripts" that the Russo Brothers gave to the actors.

Or this could be the reason why Robert Downey Jr. will not be more Iron Man, because in Avengers 4 we are going to see how he has a kid and he retires of been Iron Man.

Also, this could be a reference to Peter Parker...

[THEORY]

Avengers 4, the Avengers will have Time Travels to the past, to "fix" all the events of Avengers: Infinity War, collecting all or some of the Infinity Stones, before Thanos gets it, and they will make a new Gauntlet, and Captain Marvel will use this Gauntlet, killing Thanos before everything starts.
Traveling throught the time puting together the Hank Pym's and Tony Stark's technology, with the Quantum Realm.