The device doesn't appear to have bluetooth, which is a shame, and makes you wonder why it doesn't. I'm sure a lot of people would've loved to tether this to a bluetooth cellphone, or to a cheap bluetooth USB dongle on their PC which is set up as a gateway.
Also, one wonders why they didn't throw in a SD card reader. But then again, Sony would be Sony I guess. I don't think I'll be buying any more MS cards.
Lastly, I hope they have a faster CPU in this. The Clie UX50 was a beautiful piece of technology, but was hampered by Sony's sad choice of a custom 123MHz CPU instead of the then already available Intel XScale 266MHz CPU (plus combination of poor choice of software- and lack of support).