Hang on, is there an annual fee for this OS?
No, there is no fee it is an in place upgrade and I see it as a smart move...
Lower the support load caused by Win 7/8/8.1 users and move them to a stable platform that mitigates the negatives and moves the whole environment forward.
As to the subscription model it makes sense in a more mobile world to redistribute the computing power and allow the functions. Could you really imagine loading MS Office on your phone??
Dude, they are back on track and I got my copy of 10 and cannot wait to load it