Assuming the docker team is listening in, consider making your RC release 0.98 or 0.99 rather than 0.10. I realize that your going for "dot ten" which comes after "dot nine" but waaaaaay too many years of seeing .1 as being .8 less than .9 strangely biases my opinion of .10 as being less good than 0.9.
Nice job on the container work though, that will be really useful.
I agree 0.10 might be confusing to people... But we had a discussion about it on #docker-dev and the conclusion was that in doubt, following the model set by Linux couldn't be that bad. The most important thing, I think, is to be consistent and stay the course over many releases. That should do more to reassure people than any particular choice of versioning scheme, I think.
Nice job on the container work though, that will be really useful.