Yesterday marked the last update for Flash outside mainland China, which has a separate version of the software. Adobe will stop supporting Flash on December 31st, 2020, and it will block Flash content from running on January 12th, 2021.
Adobe offered a brief farewell in its release notes.
"We want to take a moment to thank all of our customers and developers who have used and created amazing Flash Player content over the last two decades. We are proud that Flash had a crucial role in evolving web content across animation, interactivity, audio, and video. We are excited to help lead the next era of digital experiences."