I scanned the page but didn't get -- why? What problem does it solve? Why is a browser in the business of taking care of content update? How is this better than existing solutions?
Don't use chrome anymore but, I dunno if all browsers came to the table and unified behind something like this I'd be all about it. Most of the web stacks seem like some weird polished turd solution where we started frontloading more and more onto javascript, so I am amusingly not against this proposal. Feel like it could be a step into a better direction for web technologies, which feel like a very odd/lost ship in the world of software.
https://github.com/WICG/declarative-partial-updates
https://github.com/WICG/declarative-partial-updates/blob/mai...
For one - will not need to write JS or bundle a JS library to do this if it has native platform support.