First of all, you can't overlook the fact that they've moved to a Cortex A8-based OMAP3530, an appreciable boost from the ARM11 core it replaces, but it turns out there are a whole bunch of subtler changes too, like the inclusion of on-board audio out (pictured above toward the left of the base), HD video out capability through a module, and a second microSD slot.
"We were on board as one of the first publishers that got involved with Audible, when digital distribution of audio was a relatively new concept, " says McGuinn.