One of the great things about the digital future is the ability to tie your app purchases to your respective account. In the Microsoft ecosystem we get the ability to have up to 5 Windows Phone devices with our app purchases that are tied to our Microsoft Account ID. If you get a sixth device, you’ll need to deactivate one of your previous handsets.
On Windows 8, that 5 device limit was the same as Windows Phone. But Windows 8.1 is going to increase that roam limit quite a bit. How much? A lot.