iPhone HD/iPhone 4G tear-down

Before giving the iPhone HD/iPhone 4G back to Apple, Gizmodo have done a tear-down and provided plenty of pictures of what they've found inside, including 50% of the space being taken up by the battery (which is not user-removable), and a drastically smaller, metal cased logic board. (Not to mention screws aplenty).
They didn't want to break open the board, so no word on whether it has an Apple A4 or related system-on-chip (SoC) like the iPad, or how much RAM is inside, and no word yet on NAND Flash storage capacity either.
(And yes, they did put it back together again, dozens and dozens of screws and all).
Anyone see anything else interesting in the parts?
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Rene Ritchie is one of the most respected Apple analysts in the business, reaching a combined audience of over 40 million readers a month. His YouTube channel, Vector, has over 90 thousand subscribers and 14 million views and his podcasts, including Debug, have been downloaded over 20 million times. He also regularly co-hosts MacBreak Weekly for the TWiT network and co-hosted CES Live! and Talk Mobile. Based in Montreal, Rene is a former director of product marketing, web developer, and graphic designer. He's authored several books and appeared on numerous television and radio segments to discuss Apple and the technology industry. When not working, he likes to cook, grapple, and spend time with his friends and family.