Hey guys. For the Windows users, you should reserve your free upgrade for windows 10. How, you ask? Just click on that and press the button that says 'Reserve free upgrade' you're welcome
This article should provide you with all the requirements and how to troubleshoot the gwx app.: http://www.microsoft.com/en-gb/windows/windows-10-faq
I plan on waiting for W10 to come out, read some reviews, and then decide. Ive learned from past experiences that its good to see what happens first.
That is probably the best thing to do, no harm in reserving it though as it won't auto install as you would have to agree to a whole bundle of new Eula and terms, In case Microsoft has another *Issue* with windows 10 like it did originally with the xbox one (That was a massive mess) Sorted?