Marvel knows how to celebrate an anniversary! Marvel Studios take over Hall H at Sa Diego Comic-Con on the 10th anniversary of the Marvel Cinematic Universe, and the 5th anniversary of Carol Danvers assuming the mantle of Captain Marvel. The celebration included some huge Captain Marvel news! Nick Fury is patchless, and Captain Marvel will be taking on the SKRULLS!
The Chitauri were used in Avengers due to FOX have the movie rights to the Skrulls, but it will appear that is no longer true. Feige stated that the two share custody of the shape-shifting aliens. While it is true that FOX has the rights to certain characters under their deal with Marvel, but like Quicksilver and Scarlet Witch there is a loophole. FOX has the rights to specific characters, they do not have the rights to the entire species. This is why the Watchers appeared in Guardians of the Galaxy Vol 2, but Uatu wasn’t named specifically. So using this loophole, the Skrulls can appear in the MCU but the Super Skrull, or Johnny Storm’s one time love interest Lyja can not be used. The Skrulls concept art seem to honor the original Kirby comics designs.