This is a feature I've always wanted, mainly as my laptop is used for both work and home life. The bookmarks get cluttered and filled fast (despite using folders for them) it's always felt clunky and messy, and switching browsers one for work, one for life always feels wrong as lazy me will just stick to one after an hour.
Anyhow:
blog.mozilla.org
Anyhow:
Firefox profiles: Private, focused spaces for all the ways you browse | The Mozilla Blog
Every part of your life has its own rhythm: work, school, family, personal projects. Beginning Oct. 14, we’re rolling out a new profile management featur
blog.mozilla.org