Finally, Watson's new "Concepts Insight" service lets apps connect to deeper ideas, moving beyond the mere surface-level interpretations of text.

ENGADGET: ICYMI: Best VR Ride, Screen Buttons That Re-Form and More

Surface is an extension of the Windows experience, letting customers work, play and connect with the people who matter to them.

ENGADGET: Surface RT coming to six more countries in late March, Pro in the 'coming months'