All previous rumors that Mix was going to be on the chopping block. Microsoft has revealed on its blog that the event will no longer be held. The reason is said to focus more broad, platform-centric events, such as last year's BUILD. The company also says that focusing on less events means it'll maximize the effectiveness of its engineers and the press alike. So now you can check off CES, because Microsoft will not be showing up there next year, and Mix, because it is non-existent.
Click here to read the official post from the Microsoft Blog