Firefox 81 Released With Security Fixes, PDF Viewer Enhancements
Firefox 81.0 brings the ability for keyboard/headset-based controls for audio/video playback in the browser, various accessibility fixes for HTML5 audio/video controls, Picture-in-Picture mode is now more accessible with icon improvements, and other video work. It also looks like a few VA-API fixes made it into this version too after the big push in Firefox 80.
Firefox 81 also brings a new "Alpenglow" theme for colorful buttons/menus/windows to complement the default/dark/light themes. The open-source web browser also has better support for saving/managing/filling credit card information, support for AcroForm to fill in / print / save supported PDF forms, a "fresh look" to the PDF viewer, several security fixes, and a variety of other fixes.
Downloads and more details on Firefox 81 via Mozilla.org.