She was a musical guest in 2021, 2019, and 2017, but hasn't hosted since 2009 (when she was also musical guest). She's also got an album, Midnights, coming out next month. Also, apparently (https://www.yahoo.com/entertainment/snl-looking-tap-rock-jamie-220046691.html) an anonymous source said SNL was asking her? Anyway, this market should resolve unambiguously according to whether or not Taylor Swift hosts Saturday Night Live in the upcoming Season 48.