The card WILL be shorter. This is straight from an Nvidia Rep at their E3 booth. They are going to shrink the capasitors at the end of the card, thus reducing length. Also, I asked if the revised board would use the same power connector (I prefered the 5800's horizontal connector rather than the 5900 Reference Verticle one) and he said he was unsure if that would be changed on the shipping board.
PS. I'll have more for you guys tonight. I'm gonna ask some more questions today, including the "Cheating on 3Dmark" one.