Mozilla announces it's Quantum developer edition brower in beta. They note that it's 2x faster than thier older browers.
Noticeably faster on many of the top websites
Firefox Quantum is such a big leap forward that you’ll feel it instantly, just browsing your favorite websites.
Turns out you can measure Firefox Quantum’s speed, too – our pit crew is kind of obsessed with a data-driven approach. One simple way of estimating browser performance is with Speedometer 2.0, a (still-in-development) benchmark that simulates modern web applications. Results vary based on the computer and apps you’re actively using, but one thing that’s relatively consistent is that Firefox Quantum is about 2X faster than Firefox was a year ago.