After a few months of hype, the Windows 10 Anniversary Update is here... well, mostly. Microsoft has started rolling out the upgrade to desktop users, who'll automatically receive it in stages. "Newer machines" will get it first. You can update manually if you just can't stand sitting behind the curve. However long you wait, your PC will get more pervasive Cortana voice commands (such as controlling some apps), deeper pen input (including a dedicated pen interface) and a spruced-up Edge browser with extensions.