A year ago I wrote an article called The REAL reason Microsoft Windows RT devices won't be able to join AD domains. (Hint: AD is not about systems management anymore!) My belief at the time (and now) is that the whole Windows domain structure as a concept for desktop management is anachronistic in today's world, and that ultimately AD will only be used for authentication, authorization, and identity management, not for systems and device management.
I haven't thought too much about this since then until a few weeks ago when Microsoft wrote a blog post called "What's New in Windows 8.1." That post was covered widely on the various enterprise blogs, but if you haven't seen it, definitely check it out, as it talks about a lot more than the new ability to boot directly to a desktop with a Start button.
Anyway, that Microsoft post talked about how Windows 8.1 will support something called "Open MDM."
--> Please see the rest on the blog : http://www.brianmadden.com/blogs/brianmadden/archive/2013/06/20/windows-8-1-will-add-mdm-based-management-options-confirming-active-directory-is-not-for-device-management-anymore.aspx