Sorry if I missed it, are there links to any kind of further reading or discussion regarding what Ben Alpert (spicyj) mentioned about implementing layouts in Re

Sorry if I missed it, are there links to any kind of further reading or discussion regarding what Ben Alpert (spicyj) mentioned about implementing layouts in React? I do a lot of render -> dom-measure -> re-render and it's not the greatest. Would love to dive deeper into what the React team has in mind.