Like what? I am not being snotty - for me I haven't come across any features that convince me it is worth the upgrade. I am just curious what others see in it.
I'm not saying they're great "new" features for any OS but for Windows they would include isolating drivers from the kernel process. Now, in theory, the driver for Cap'n Joe's Super Duper Really Neat video card won't crash the kernel.
While I've yet to have this problem personally by far most crashes I've seen on various Windows computers are the direct result of really, really crummy drivers. More so than spyware and malware.
Even the administrator account can't do anything without jumping through hoops. Even logged on as administrator if you want to change something you have extra clicks. Ditto if you want to run a command line session that requires administrator privileges; you have to invoke a special command line session.
Nothing new for other operating systems but a major change to Windows (and a pain in the butt to me). I haven't yet tried it but in the next several I'm going to throw some nasty stuff at it and see if AV software is even necessary. If that's the case the savings on AV software licensing fees could be a factor.
Granted these features are probably not worth an upgrade to most users including, I'm guessing, you, but a lot of my clients who don't listen to my hardware and security advise find them interesting.
Search is another area.
Obviously an operating system is simply a tool and a trim carpenter hardly needs a framing hammer but I am seeing some interest from some depending on what they perceive their needs to be.
I think it has more eye candy and is more media oriented. I have no reason to buy it.