Well, you guys are quick to dismiss without having heard a word. Yes, it is PR. That's your modern world. But, many of you may be interested to know that both of those speaking (Andy and Billy) personally drive a LEAF at home.
Many of the modifications to the 2013 were direct results of user input. The North American battery does have a slightly different chemistry than Japan (sorry, no hard tech data).
I found everybody involved from Nissan to be quite personable and seemingly forthright. Of course, that doesn't mean they gave away state secrets or said something that the legal department told them not to say. That's also the modern world.
Still no price on the battery and no hard printed capacity warranty. Expect both in the comings months.
I must give them credit for coming to a potentially hostile crowd and stating their case. They could just as easily hide behind Press Releases and let the lawyers handle the fallout.