What a roller coaster ride of a post. Great job guys. No mention of whether the feature is available now on a stable release. What release version that is. How to enable it. How to actually use it. Where to go for documentation or bugs. And congratulations on concentrating on the one top feature request. What's next? Looking at some of the 20 year old bugs that still exist?
> This feature is experimental and is being introduced to the Firefox user base through a progressive rollout. It may not yet be available to all users.