The ace team at iFixit has given the ol’ teardown to the new Google Nexus 7 and they’ve discovered that the rear case is very easy to open, that it’s taller, narrower and thinner and that there’s an… inductive charging coil (the first iFixit has seen in a tablet). The battery inside the new Nexus 7 is slightly smaller too even though it’s gained an hour of battery life (3950mAh vs the old 4326mAh).
Other hardware details (quad core Snapdragon S4 Pro, Elpida RAM, etc.) and more pictures of the Nexus 7 guts can be found at iFixit [iFixit]