The Daughters of Liberty debuted in Ta-Nehisi Coates’ current Captain America arc back in January 2019. The Daughters is an all-female hero group originally created by Harriet Tubman in the 18^th century to protect America from threats. As we learn later in the series, they were responsible for guarding the super-serum that gave Steve Rogers the powers of Captain America. The Dryad (AKA Peggy Carter), Agent 13 (AKA Sharon Carter), Agatha Harkness,Echo (AKA Maya Lopez)
She’s premiering in the Hawkeye TV show. Variety Magazine has also just recently reported that Disney is already working on a spinoff show for her.Black Widow, Shuri, Invisible Woman (AKA Sue Storm), Misty Knight & TONI Ho!

The Daughters of Liberty storyline was likely storyboarded in early-2018 which was probably also around the time Kevin Feige and the Marvel team were finalizing the details for Phase 4 through 6. I can easily see them working with Coates to help establish this team to use in the future. (Coates is also the guy writing the new Superman movie.)

  Captain of Nothing: Part 5 of 6 - Written by Ta-Nehisi Coates. Art by Adam Kubert. Cover by Alex Ross. CAPTAIN OF NOTHING continues! HUNTED AFTERMATH! MANHUNT! But who is doing the hunting - the law-enforcement apparatus of the world or Captain America himself? 28 pages, full color. Rated T+ Cover price $3.99.

 The Falcon and the Winter Soldier.

A full trailer for The Falcon and the Winter Soldier debuted alongside new trailers for other Marvel Disney+ shows, including Loki, What If?, and WandaVision. Marvel also dropped announcements for new shows like Secret Invasion, Armor Wars, and Ironheart, and revealed other information about its upcoming projects. As for the footage shown in The Falcon and the Winter Soldier, not much was given away in terms of which Marvel Comics characters the two main protagonists will be crossing paths with, but some of the struggles they’ll be encountering were shown in the trailer.