Microsoft unveils Windows 10 and new wearable 3-D gadget

 
Microsoft on Wednesday took the wraps off a new version of Windows – and a new wearable 3D gadget it calls the HoloLens. Software to be released as free upgrade for existing ‘8.1’ and ‘7’ customers Microsoft on Wednesday took the wraps off a new version of Windows – and a new wearable 3D gadget it…