With part of Marvel Phase Three and all of Marvel Phase Four unannounced, aside from a slew of mysterious release dates that span until 2019, many fans are wondering which projects will be slotted into the Marvel Cinematic Universe. One of the few projects that hasn't made it out of the development stage yet is Black Panther, which we reported last month is wanted by the fans more than Iron Man 4.During an appearance at Fan Expo Canada over the weekend, Marvel legend Stan Lee confirmed that Marvel is still working on a Black Panther movie, while also hinting that the studio is working on a stand-alone movie for Scarlett Johansson's character Black Widow."We haven't made a Black Widow movie but she's been in some of our movies, and she will be featured more prominently as we move forward.