Audacity 4.0 released (lwn.net)

<p><a
href="https://github.com/audacity/audacity/releases/tag/Audacity-4.0.0">Version
4.0</a>
of the Audacity audio editor has been released. Notable changes in this
release include a rewritten interface using Qt, ability to save user-interface
layouts as "Workspaces", improvements in working with audio clips, and a new
<tt>.aup4</tt> project format.</p>

<p>The release is not fully feature-compatible with the Audacity&#160;3.x
series; see the <a
href="https://github.com/audacity/audacity/releases/tag/Audacity-4.0.0#:~:text=Compatibility%20notes">compatibility
notes</a>
for a list of missing features.</p>