Follow
if you are using the Beta, Developer or Nightly build of Firefox, there is a setting you can change to ensure that you get access to the revamped interface as soon as possible:
Launch Firefox and pay a visit to about:config
Search for browser.proton.enable
Configure the setting to true
Restart Firefox
can't say exactly when you will see anything new, but with the setting enabled you can be sure to clamp your eyes on the new look as soon as it is possible to do so 😜