"The biggest change of all?
You can no longer buy Office, Microsoft’s flagship product, on removable media. You can’t even download offline installer files for the three retail editions of Office: Home and Student, Home and Business, and Professional.
If you purchase a single-user copy of Office 2013 from an online reseller (including the Microsoft Store) you get a product key code. If you buy a boxed copy of Office 2013 from a retailer, you get a product key on a card. In either case, you have to go to office.com/setup, where you’ll see this prompt:"http://www.zdnet.com/big-changes-in-office-2013-and-office-365-test-microsoft-customers-loyalty-7000011389/
to be honest, i am a bit lost with this crap they offer now, specially knowing that i will have to install and support it