What will Windows 8 change in the workplace?

Just read this article about how the introduction of Windows 8 will change the way we work.

http://www.techradar.com/news/world-of-tech/roundup/what-will-windows-8-change-in-the-workplace-1105057

With the emergance of 4G technology and a universal operating system that will work on Tablets, Phones and Desktops, are we no longer chained to our desks?

Will it change the way we work? And what are the obvious issues like Security considerations due to multiple external access sources?