Well as long as it has a fox and some form of firey colors, going around the globe , it’s easy to know that it’s firefox.
But I also know after working with a number of designers, that doing re-branding of a major company is kind of a hallmark event in their careers, and this is the reason we have an evolution of brands.
I do hope they stick to the silhouette though. Apple is still very recognizable after a number of logo changes. It’s still an Apple.
Firefox being that circle makes no sense.
as long as it's a fox chasing its tail. That IS Firefox.