A new promo poster for Sony and Mattel's live-action Masters of the Universe adaptation reminds us that, yes, this movie is still in the works. Doubling down on the March 2021 release date, the poster doesn't do much else. It's not really meant to. It's a promo poster from the upcoming Licensing Expo which features studios putting their upcoming projects on display in order to strike deals with big name brands from all sorts of industries. For the He-Man fans out there, though, it's a nice reminder that we'll be getting another …