Well, the Snapchat shutdown rumor technically started in 2019 with Twitter users questioning if we'd be saying goodbye to the app in the summer of 2020. Though the rumors were proven to be false (Snapchat is still up and running), the app will reportedly be undergoing a redesign.
According to The Verge, Snapchat has been working on updating their breaking news headlines, which will supposedly pop up on a more timely basis, as well as a new home for Snap Map, and adding to their already-existing Discover Page.