Awesome! This came to my attention when I saw a tweet from this bot which indicated the FedCM had an intent to prototype the FedCM AuthZ API.
The tl;dr is that the FedCM working group and the browser vendors are slowly working towards first-class APIs and UX for OAuth and authentication, so that federation will work when third party cookies are phased out.
Anyway, the point is, if you are interested in an evolving web API for your product, you should pay attention to what is happening among the big four: Chrome/Chromium, Edge, Safari, Firefox.
Subgrid is going to be so nice to have. Layouts that designers consider 'obvious' will be trivial to implement. No more hackery to make nested elements vertically align.
I've pretty much given up on anyone but Apple implementing advanced color spaces.
on edit: it looks like canIuse says they are supported, and some lab demos seem to be working (in Mac on various browsers) even though Chrome's lab release notes reads to me like they have yet to even get started.
I just went and looked at https://chromestatus.com/feature/4592567062626304?context=my... and it seemed like - no - which is why I felt downheated? I admit that can't find anything in Mozilla's spec search, but you're right looking at canIuse says they are supported now.
ah ok thanks, apologies for my confusion but actually this is great news especially as I have some stuff I've been wanting to do with this for a long time.
