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Watched it now that I am home.
Some of the items I picked up on.

Receptacles required on roof for HVAC service.
Kitchen island/peninsula receptacle spacing changes
Receptacles for garage door openers now required
Weather tight in use cover for external receptacles
New ampacity tables for derating
Rules for armour cable in conduit.
TR receptacles in day cares

Here is some more info

Link to summary of top 15 2012 changes

Still alow ranges to be bonded via the neutral, main breakers in the middle of the buss and without a barrier between the main breaker section and branch. Spotty adoption. There are places not yet using the 2008 NEC.
Non electrical people doing electrical inspecions, Carpenters doing electrical work in some places,

Tables 3 and 4 (aluminum conductors) have symbols beside #10 awg, which refer us to 14-104(2). 14-104(2) doesn't mention #10 aluminum.

The likelihood of an error in a document increases by a factor equal to the importance of the document multiplied by the number of kopies.

yeah they mentioned that today at the know the code 2012 seminar i attended today
9 hours in a convention center chair ouch my back

I will have to digest and review my notes in the coming days ,the work book was almost as thick as the 2012 code

there will be some updates coming

What do you suppose the maximum overcurrent rating will be for #10 Aluminum?

When I look at the calculations, it seems there isn't much of a penalty for loading a conduit with #14 wires. But, I have to admit these calculations are dreadfully boring and it's beyond me to stay awake long enough to read all the rules. http://www.codemath.com/cgi-bin/Run.pl?script=CecAwgRw2012