"Firefox 57 is a monumentally important release for the Firefox project, for Mozilla, and for open-source software in general.
The best part is that none of this is hyperbole: Firefox 57 really is better, faster, stronger. These improvements are tangible."
http://www.omgubuntu.co.uk/2017/11/firefox-57-quantum-better-faster-stronger
@tetron Only if you use quite obscure add-ons, I'd say. All the ones I rely on he been updated or ha just as good alternatives :)