"WebRender newsletter #28" – Mozilla Gfx Team Blog https://mozillagfx.wordpress.com/2018/11/02/webrender-newsletter-28/
At first I thought WebRender was basically the same as Edge's independent rendering (i.e moving rendering to a background thread), but based on this post it seems a lot more ambitious actually. Interesting stuff, and kudos to the Firefox folks for opening up on their thought process.