CoreOS Alpha 612.1.0 & 612.0.0 where both released on the same day. CoreOS is a new Linux distribution that has been re-architectured to provide features needed to run modern infrastructure stacks. The strategies and architectures that influence CoreOS allow companies like Google, Facebook and Twitter to run their services at scale with high resilience. CoreOS is Apache 2.0 licensed and runs on your existing hardware or cloud providers. CoreOS Alpha 612.