I have. Though some of the App don't work. I got a error on the Epix app, and a error on a few movies in the Netflix App (though some worked). Looks like the Epix issue ia known outage. Here is a
link to XBL Status. Other stuff seems to be Zune and XBL Marketplace.
Overall I like the update. I thought I was going to dislike it, since I am not a fan of the Windows Phone GUI, but it works for the 360. I like the shortcut for Checking network settings, and playing a game right there. Too bad you can't customize it...can you? The netflix app is soooo much better too. Watching series is easier, you can see so much more stuff, it plays picture previews for alot of stuff. Cloud storage isn't useful for me, since...well I don't go out much. Hehe. But for my brother, he loves it. Do you still have to import profiles I wonder? Or can it access your profile from the cloud too?
And yes, Ghost in the Shell is one of the best Japanima of all time. I would say Akira, Evangelion, Ghost in the Shell, Fist of the North Star,Ninja Scroll and Vampire Hunter D Bloodlust. Those are my favorites at least. Woot!