[kop316]

I looked at the page, it is interesting, but I have never heard anything about this. They page didn't also say anything about who they were/what they do?

Do you have anywhere with more information about this/the folks behind it?

[Tepix]

It's the successor of the Copperhead OS project. Some details at https://liliputing.com/2019/04/grapheneos-is-an-android-base...

[Brakenshire]

Fantastic that it’s open source now.