http://www.mogya.com/zaurus/index.php?2004...%ce%be%f0%ca%f3From this link, I obtained a bit more information about the new device. (This is the same place that brought us the first pictures.)
This is a rough translation with my limited Japanese skills,
Other than the previously mentioned stuff, the site says that it will include the Koujien, japans most famous and complete dictionary. It also will include the Genius English to Japanese and Japanese to English dictionary. While this is good news for us Japanese students maybe not for those of you who don't want to pay for very expensive dictionaries you probably won't use. Considering these are huge dictionaries it might explain why this thing has got the built in hard drive.
It doesn't say anything about USB host but it does use the PXA 270 which unlike the PXA 255 enables this from what I understand.
Also of note is that it mentions 3 hard drive sizes.
It says 4GB hard drive, but user area 3. (Maybe to make up for those dictionaries)
It also says 6GB hard drive and then something like shipment #2, but I don't know how to translate this exactly so don't trust me.
Then it says 9GB hard drive and something about it being empty? I'm not sure on this one at all and I don't really know how to translate it.
Maybe someone can help with my translations?