CoreOS Container Linux releases progress through each channel from Alpha → Beta → Stable. You can think of each release on a lower channel as a release-candidate for the next channel. Once a release is considered bug-free, it is promoted to the next channel. If you're deploying a new machine, it is recommended to deploy a version attached to a channel instead of the highest version number availabl
![CoreOS Container Linux Release Notes](https://cdn-ak-scissors.b.st-hatena.com/image/square/21e760dac2c6dd9e87cf507dcbcca55c46ff724e/height=288;version=1;width=512/http%3A%2F%2Fcoreos.com%2Fassets%2Fimages%2Fbrand%2FCoreOS-twitter-embed.jpg)