Phase Four of Marvel's programming slate, which includes big blockbuster films and limited TV shows that will stream on Disney+, has been delayed as a result of the novel coronavirus. The COVID-19 pandemic pushed the release of Scarlett Johansson's Black Widow, the character's long-awaited solo film, from May until November. Unsurprisingly, this move then set off a domino effect for the rest of Phase Four, at least on the big screen.