SD cards... SDHC through firmware upgrade?
I don't know a lot about SD hardware, but I'm hoping that support for SDHC cards can be added in future via a firmware upgrade?
The reason being simply that there are fewer and fewer non-SDHC cards available for purchase at retail (there aren't any 4GB non-SDHC that I can find, for instance).
Besides which, it'd be nice to have the capability to use a 16GB card, even if it's extremely unlikely that I'd ever need to carry thousands and thousands of books with me at any given time. ;-)