Right now the visionaries are adopting Docker, using it and working closely with us to iron out the kinks.
One of the ways we're working risk-averse businesses who have bought in to the idea, is to pick a pragmatic project that's low stakes and will ship to production sometime late Q1 or Q2.
This provides best of both worlds. Low risk project gets visibility inside of the company, and is a strawman for future implementation. Win/win for everyone.
Solomon (lead maintainer of Docker) has done a brilliant job reconciling all of these projects and community needs in to their essence and implementing just enough to satisfy a plethora of use cases.