It looks like Microsoft is set to work on a mobile personal assistant, that will tie in with all of it's products. The voice assistant is going to be named after Cortana, who was the AI character in Halo.
Nuggets of information have been popping up regarding Microsoft's voice assistant, with an app called 'zCortana' the biggest hint in an early version of the Windows Phone OS. Stefan Weitz, director of Being, commented on the fact that Microsoft was building a competitor to Apple's Siri and Google Now, but wanted it to be better. He said: "We are not shipping until we have something more revolutionary than evolutionary. There are teams working hot and heavy on this right now."
After the missteps that were Surface and Windows 8, I expect great things from Microsoft's voice assistant. Microsoft has yet another uphill battle before them, as its competitors' services continue to get better and better with each passing day.