4.0.1 was released and a 7-Zip version of the ZIP file now exists for both Winx86/x64 and ARM64, though as of today (10/1/2026) they are not on the regular site, you have to go either to GitHub here: Release Audacity-4.0.1 · audacity/audacity or the SourceForge site (see link above) to find them. I extracted the x86_64 version, and it is working for me, though it seems to be missing stuff that was available in v3.7.9, as others have documented.
Before I heard 4.0.1 became available, I also started trying out SoundScaper, created by Audacity Team veteran Leo Wattenberg, more info here: Soundscaper is getting ready for action . Web and Desktop versions are available, and Desktop offers a portable in ZIP and 7-ZIP. So far it seems to be a pretty solid app, especially Web version. Desktop is good too, though a few things are not working there yet that are working in the Web version. This app has got quite a few things that are missing in Audacity 4.x. I really like the Analysis tab, with max volumes for highlighted section of tracks in dBTP, RMS, LUFS, etc. along with dBFS, without having to install and use separate Nyquist scripts or VST add-ins to get this info. While still in progress, this app is worth a try.