The story and screen shots are based on reports from users of the Office 15 Technical Preview. No doubt, Microsoft heard from users that they didn't want to be forced into using a touch interface, and the layout of the screens shown by Foley indicates that Touch is a distinct mode of the program, allowing users to move between it and a conventional keyboard/mouse UI. Foley's source says the button doesn't actually do anything yet.
InformationWeek Tech Digest August 03, 2015The networking industry agrees that software-defined networking is the way of the future. So where are all the deployments? We take a look at where SDN is being deployed and what's getting in the way of deployments.