I am a Redmond Fanboy, usually anything out of Redmond or in partnership with Redmond, I usually jump and buy one. But DRM whether it's from Microsoft or someone else, usually results in a groan of extreme pain.
Microsoft announced a new DRM called PlayReady that is aimed at mobile media. PlayReady is designed for subscription base content, rentals, pay-per-view, and other sorts of media and is backwards compatible with Windows DRM 10 so you can use your existing content.
PlayReady is expected to be out sometime during the first half of this year.