What does “experimental color management” mean? Is that HDR support?

Can anyone expand on that?

This is a good step but I still feel like it’s pretty obscure where a package is actually coming from. “by Google” or for the Steam package “by Value” is really confusing and makes it sounds like it’s coming directly from the company. Unverified tells the user to pay attention but there is no hover over to say what it actually means.