Identity Management for UNIX component is available with Longhorn Server Beta 2 (5384) build.
This component has two subcomponents -
We have a web download which contains Single Signon Daemon (SSOD) which can be installed on Linux and UNIX variants like AIX, Solaris, and HP-UX.
This web download is now available at this location. Please try it out and let me know the feedback. We are very excited to hear about them!