I was roaming the web and came across this nice little device.
The device allows you to use Miracast/Airplay in 1080P for 32 bucks. Using this device with the X1 HDMI in port basically would allow you cast your Windows 8.1 display on your X1 or you could use the Surface Pro/RT Android, Apple and Windows devices that support Miracast(Wi-Direct)
For people that already have a X1 this would be a great and cheap device to basically do what Chromcast does but with wider support. Since the device will mirror your screen on the X1 you can basically send any type of content including playing your mobile game apps.
Now my wife who hate games but cannot stop playing Candy Crush will be able to stream that game on our 52inch TV in all its pixilated glory.