TenFourFox Feature Parity Release 31 final is now available for testing (downloads, hashes, release notes). There are no additional changes from the beta except for outstanding security patches. Locale langpacks will accompany this release and should be available simultaneously on or about Monday or Tuesday (March 22 or 23) parallel to mainline Firefox.

http://tenfourfox.blogspot.com/2021/03/tenfourfox-fpr31-available.html