This is a consolidation of two or three (depending how you look at it) previous categories in Windows 8 – Personalize and Devices, with a bit more.
Finding your entire product key remains a black art. In addition, the screen tells you the key currently in use, though don’t get too excited, as it is all X’s except for the last 5 digits. There is also an option to purchase a key right here, as well as to call support. This option was not part of Windows 8 PC Settings and, as the name implies, it is simply a place to register your computer or enter a newly purchased key if you are doing an upgrade – such as regular to Pro.