new iPod touch revealed something rather more interesting: a Broadcom BCM4325 Bluetooth 2.1+EDR chip. (That's the silver rectangle in the middle of the top circuit board there.) That's got a lot of people all atwitter, but there's an obvious explanation for it: Nike+, built into the new touch, is based on a proprietary low-power 2.4GHz communications protocol called ANT -- not quite the standard Bluetooth frequency, but awful close. Yep, sorry, it's for technojogging, not secret A2DP -- although we'd welcome actual Bluetooth support in the touch with open arms. Hit the read link for the complete breakdown.
Update: Just to be totally accurate, the BCM4325 also does WiFi -- and Nike+iPod has been called a "proprietary 802.11 protocol" in the past, so it's even less likely that it's there for actual Bluetooth usage.