By and large this is a quiet update, with most of the work being done under the hood. Some noteworthy changes: More changes can be found in the changelog: Audacity 3.3 – Audacity Support You can download Audacity 3.3 from audacityteam.org/download.
A Load of Features

Recording
Audacity can record live audio through a microphone or mixer, or digitize recordings from other media.

Export / Import
Import, edit, and combine sound files. Export your recordings in many different file formats, including multiple files at once.

Sound Quality
Supports 16-bit, 24-bit and 32-bit. Sample rates and formats are converted using high-quality resampling and dithering.

Plugins
Support for LADSPA, LV2, Nyquist, VST and Audio Unit effect plug-ins. Nyquist effects can be easily modified in a text editor – or you can even write your own plug-in.

Editing
Easy editing with Cut, Copy, Paste and Delete. Also unlimited sequential Undo (and Redo) in the session to go back any number of steps.

Effects
Real-time preview of LADSPA, LV2, VST and Audio Unit (macOS) effects. Plug-in Manager handles plug-in installation and addition/removal of effects and generators from the menus.