For those of us who speak English but are outside the USA and spell “colour” with a U, Firefox is now available in “British English” (that is, non-US English) as well as a host of other languages.
Meanwhile, the domain firefox.com has been acquired by the Mozilla Foundation, and is displaying one of those “Umm, which Firefox did you want?” pages, like bbc.com did for a while after it was bought from Boston Business Computing.