This isn't how Microsoft is using the term. For them it's essentially a hollow marketing differentiator and a way to lump Hololens and inside-out tracking under

This isn't how Microsoft is using the term. For them it's essentially a hollow marketing differentiator and a way to lump Hololens and inside-out tracking under the same banner. To all intents and purposes just substitute "VR" whenever Microsoft says "Mixed reality". I really hope their usage doesn't catch on.