http://www.techradar.com/news/xbox-one-x-everything-we-know-about-project-scorpios-final-form

Updated: Microsoft's Mike Ybarra has recently confirmed that mouse and keyboard support can be expected on the new console. Speaking at a Q&A panel at PAX West, the corporate vice president said, "Keyboard and mouse support is definitely coming...you'll see our first keyboard and mouse supporting games soon." 

The announcement is great news for anyone that prefers the control scheme of PC gaming but is scared off by the initial high hardware costs.