Docker 1.3.0 Release Candidate (github.com)

Do you mean user namespace support?

If by namespace you mean user namespaces, no. Unfortunately golang has made this difficult... fortunately the fantastic folks on the Golang team have graciously added in the support we needed for Go 1.4 even though it's in feature freeze. So Golang 1.4 should be out in Decemberish timeframe, then we can update Docker to use Golang 1.4 and then wrap up work on user namespaces support within libcontainer/docker.

Totally just guessing here, but I'd say Jan/Feb timeframe for user namespaces.

Well, the volume bug fixes are fixing things with the volumes re-write which hasn't yet hit a release (which also adds no public functionality at this point) .