How much does the OCI image spec differ from the one developed by CoreOS for appc? When OCI was announced, image spec was outside of its scope (https://coreos.c

How much does the OCI image spec differ from the one developed by CoreOS for appc? When OCI was announced, image spec was outside of its scope (https://coreos.com/blog/making-sense-of-standards.html https://coreos.com/blog/making-sense-of-standards.html), so coreos's work in this space seemed highly important. So has all work essentially been abandoned? Or did it inform the image spec of OCI (and 'what docker does') at all?