It took 9 years of waiting and 2.5 hours of keynote to get there. Microsoft just demonstrated the ultimate ultra-mobile, cross-platform PC experience – A combination of Windows 10, Universal Apps and Continuum on a phone running a Universal app that adapts the UI as it moves from phone to big-screen. One device, one OS, one app, multiple screens. If this strategy works then it’s likely to mean the death of the consumer Windows Desktop and completely change the consumer PC market. It also opens up the desktop screen to ARM-based devices. There’s a lot to think about here.