So long as CoreOS does not embed any malware, is not compromised, and remains in business then it is the killer Linux distribution of 2014 and is far superior to Project Atomic. The idea that the kernel is going to be updated either automatically or upon next reboot is going to take some time to get used to. It also means that I have to keep my eyes glued to their site to make sure that any new changes are accounted for. It also means that CoreOS must maintain backward compatibility forever. It also means that the tools like etcd, fleet, locksmith, and systemd must always be backward compatible.
But for me… I have been waiting for Docker 0.11.0 to arrive. After a reboot this afternoon. There it was. Amazing.