There is no reason to expect that the enterprise will move wholesale into Windows 8. Out of necessity, the enterprise NEVERS moves that fast. Besides, Windows 7 enterprise meets all their business needs.

That said, BYOD has taken on a life of its own. It is much more palatable these days for the enterprise to let employees buy their own tools than it is to buy the tools for the employee and then try to figure out the extent to which employees are using enterprise-owned hardware for non-work-related activities.

For the last few years, corporate decision-makers have been buying iPads (and to a lesser extend Android tablets) as auxiliary devices instead of carrying their Windows notebooks everywhere. Microsoft is hoping that these corporate decision-makers will start buying "Surface 8 Pro" tablets instead. This particular device is the ideal one-stop solution for that scenario.

Similarly, consumers have been replacing aging Windows 7 notebooks with iPads (and other tablets) instead of buying new Windows notebooks. The "Surface RT" tablet is the solution for them.