The wording of this statement makes it seem like Microsoft has nothing left in them:
In the fourteen years that we have invited Microsoft to deliver a keynote address at CES, the company has unveiled some great innovations, from operating systems to gaming platforms to mobile technologies. Both CEA and Microsoft have agreed that the time has come to end this great run, and so Microsoft will not have a keynote at the 2013 CES.
CEA thinks Microsoft has nothing to offer, so we have ousted them? Or, Microsoft wants to pull and Apple and come out with products on their own time?