What you need to know about Windows 10's new upgrade
There's been a good deal of confusion about the just-released upgrade to Windows 10. It's been called by a variety of names, including Threshold 2, Fall Update, build 10586 and Windows 10 version 1511, and there's been a lot written about it -- but it may still be difficult to glean exactly what it is, what it does and how to get it.
