Got mine about an hour ago!
First thing is physical appearance.
1) The screen is matte and not glossy. I did not notice any reflections but I'm also not in direct sunlight or anything either.
2) The front part of the panel is piano black while the back part is a dark-ish gray plastic.
3) It has a very small chrome strip on the bottom which may not have been noticeable in the internet promotional pictures that Samsung released.
4) There is no touch-sensitive buttons on the side, they are real physical buttons.
5) The stand came pre-attached (already assembled) which was nice.
6) There is a piano black remote which has a backlight too. Not sure if this is new or not since my last Samsung was a 3251D (two years old I think?).
I tried a Mac Mini (using the included DVI to VGA adapter) and the Apple Mac OS X boot-screen logo appeared but after that it said "mode not supported". Not sure what is going on... This was one of the reasons I wanted a 1080p TV, hope I can use it.
As for picture quality, I'm seeing a bunch of artifacts ("blocks") and stuff (from Comcast HD DVR). I'm not sure if it's the source feed or what, I did not notice this on my previous (720p) TV. I'll be testing a Blu-Ray on my PS3 very shortly. I'm using these settings
which were done for Samsungs previous models.