"GitHub is gradually rolling out support for IPv6. As GitHub services continue to add IPv6 support, we will start recognizing IPv6 addresses of GitHub users. To prevent possible access interruptions, please ensure you have added any necessary IPv6 addresses to your IP allow list."
@sgryphon Personally I'm not too worried about that sort of thing.
I think this is most noteworthy, because GitHub is often used as an example of where IPv6 is missing and needed. This seems to further weaken the arguments of the remaining IPv6 naysayers.