Avengers: Doomsday teaser reveals the return of Chris Evans as Steve Rogers

Marvel Studios keeps bringing back the actors it sent off in Avengers: Endgame — and I'm not just talking about Robert Downey Jr. as Doctor Doom.
Instead, I'm talking about Chris Evans as Captain America/Steve Rogers.
The teaser trailer for the upcoming Avengers: Doomsday puts Steve front and center, revealing what's been going on in his life since the end of Avengers: Endgame. In that film, following the return of the Infinity Stones, Steve stayed in the past and married Peggy Carter (Hayley Atwell). He grew old and, in the present, passed his shield and the title of Captain America to Sam Wilson (Anthony Mackie).
However, based on the Avengers: Doomsday teaser, it's clear that that wasn't really the end of his story.
The teaser sees Steve returning to the home he shares with Peggy, then cradling his newborn child. Cute, right? Well, it's less cute than it is foreboding, because what in the world is going to happen to Peggy and that child to bring Steve out of retirement and into the fight against Doctor Doom? Remember how Doctor Doom was creeping on Reed Richards (Pedro Pascal) and Sue Storm's (Vanessa Kirby) baby Franklin at the end of The Fantastic Four: First Steps? What if he's coming after all the super babies?
In addition to Downey Jr. and Evans, Avengers: Doomsday also stars (deep breath) Chris Hemsworth, Kirby, Pascal, Mackie, Sebastian Stan, Letitia Wright, Paul Rudd, Wyatt Russell, Tenoch Huerta Mejía, Ebon Moss-Bachrach, Simu Liu, Florence Pugh, Kelsey Grammer, Lewis Pullman, Danny Ramirez, Joseph Quinn, David Harbour, Winston Duke, Hannah John-Kamen, Tom Hiddleston, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, James Marsden, and Channing Tatum.