While smartphones have carved out a really useful space in our pockets, most of us have retained a desktop computer or notebook for "real" work. What if you could have a device that worked as both. Something you could slip into your pocket when you're out of the office but could easily dock and connect to a big screen and a mouse and keyboard. That's the promise of Samusng's DeX - and it looks like it's getting a hefty update to help realise that one device dream.