Was my thoughts exactly. Seems odd to put Docker into a RHEL release, especially since docker only 1.0'ed yesterday. RHEL usually goes for rock solid stable (typically older/matured) packages... LXC seems the natural fit... I could see Docker in RHEL 8 or something...
RHEL can go years without seeing a major version increase. In between now and then, a lot of people are going to want to use containers, including Docker. If RHEL doesn't support them, people are going to use Debian/Ubuntu/CoreOS/etc. instead. So Red Hat is supporting them. They know Ubuntu has a head start on them in the cloud, and they do not want to let them widen that gap.
