A few long time Xbox Live users are being told by Microsoft they will get free codes to get the full Xbox One version of "Killer Instinct" or, for a very select few, a free Xbox One console itself.
A week of Windows 10, holograms and Exploding Kittens on Mars
Office 2016 launching this year, touch apps coming soon
Microsoft reveals the next version of Windows 10
Introducing Windows 10 for phones
Hands on with HoloLens
Download: Windows 10 build 9926