Pre ordered it @ Best Buy yesterday and they sent me an email stating that the intended release date had been changed to today. Immediately canceled my online order and reserved one at my closest Best Buy store. Picked it up at 10:000 AM when the store opened.
The weight reduction - while seemingly not that significant on paper - can really be felt when handling the tablet. I didn't expect it to feel lighter in my hand(s) but it definitely does. Also has a nice solid/quality feel.
Speed & fluidity of the tablet in general is better than the original N7, but to be fair the original N7 I have (only about a week old) is very speedy. I'll be playing with more apps during the day to see if that holds true.
The included USB data/charging cable is too short IMHO - just like the original. The actual charging wart is different than the original, but about the same overall size.
The screen is a lot brighter than the original - a big improvement and very noticeable.