Firefox 83 is the latest version after Firefox 82, released in October.
Firefox 83 has improved search features. It adds support for AcroForm, which allows users to fill in, print, and save supported PDF forms. For developers, it allows scroll badge to be used in the Page Inspector. Selecting the badge highlights elements that are causing overflow. Also, this release has fixed security problems and bugs.
The desktop version supports Linux, macOS, and Windows, and it is available for download from the project website. Firefox 83 for Android was also released on the same date.