It seems every person and their dog/cat likes to give their two cents when it comes to what might make the bill at Macworld. So, if you can’t beat them, join them.
Hrmpf’s Predictions

PDA/iPod/remote control with wifi and optional telephony
wifi allows iChat audio chat/IMing from any wifi hotspot
allows exchange between iPods (crippled by DRM no doubt)
interacts [...]