Anyone managed to get into the preview? It is completely and totally 
I got in yesterday, and it's pretty cool. Here's some things I observed:
A. Avatars as expected are pretty much a gimmick, and clothing choices are few. Yet there's approximately 50 billion hairstyles. I still like their design better than Mii's though.
B. The entire interface is MUCH faster. It doesn't take forever to scroll through the marketplace, and reading descriptions finally has the ability to manually scroll (right stick)
C. Install to HD is pretty slick but don't expect massive improvements. For size usage comparison, GTA4 came in at 6.8GB.
D. I'm not sure if this was available on the original interface, but you can set your own "wallpaper" now if you don't wish to use a theme. Use the picture library and hit the appropriate button to make the image your background on the dash.
E. Couldn't test Party mode yet as you have to have others in NXE to use it :saddowns: Although I am probably the most excited about this feature.
F. The install process was painless and can be done without anything more than saying "yes" when it prompts to update. No sitting and waiting on it. It took longer to download than it did to install, but the whole process took less than 5 minutes on my decent cable connection over wifi.
G. Many menus are nearly the same as they were on the old interface, such as the system settings. You won't be easily lost. It's all "familiar" but different. Random observation: The xbox connection test now is a little more graphical. It reminds me of Vista's Networking Center map.
H. The ingame guide menu seems faster. It doesn't lag anymore, especially when a game is loading and such.
If you guys have any questions or stuff you want me to test, lemme know and I'll take a look at it.

I got in yesterday, and it's pretty cool. Here's some things I observed:
A. Avatars as expected are pretty much a gimmick, and clothing choices are few. Yet there's approximately 50 billion hairstyles. I still like their design better than Mii's though.
B. The entire interface is MUCH faster. It doesn't take forever to scroll through the marketplace, and reading descriptions finally has the ability to manually scroll (right stick)
C. Install to HD is pretty slick but don't expect massive improvements. For size usage comparison, GTA4 came in at 6.8GB.
D. I'm not sure if this was available on the original interface, but you can set your own "wallpaper" now if you don't wish to use a theme. Use the picture library and hit the appropriate button to make the image your background on the dash.
E. Couldn't test Party mode yet as you have to have others in NXE to use it :saddowns: Although I am probably the most excited about this feature.
F. The install process was painless and can be done without anything more than saying "yes" when it prompts to update. No sitting and waiting on it. It took longer to download than it did to install, but the whole process took less than 5 minutes on my decent cable connection over wifi.
G. Many menus are nearly the same as they were on the old interface, such as the system settings. You won't be easily lost. It's all "familiar" but different. Random observation: The xbox connection test now is a little more graphical. It reminds me of Vista's Networking Center map.
H. The ingame guide menu seems faster. It doesn't lag anymore, especially when a game is loading and such.
If you guys have any questions or stuff you want me to test, lemme know and I'll take a look at it.