updated 04:05 pm EDT, Fri September 11, 2009
iPod touch has Broadcom 11n part
Apple's new iPod touch has a partly neutered 802.11n Wi-Fi chip inside, according to a find by repair house iFixit. The media player is officially listed only as supporting 802.11g, but the Broadcom BCM4329 (PDF) chipset inside can technically use the much faster, 300Mbps maximum wireless standard. It also includes an FM transceiver and could theoretically support both radio stations as well as beaming audio to a car.
Unlike the "hidden" existence of Bluetooth in the second-generation iPod touch, however, the iPod touch trait isn't inherited from an iPhone released earlier in the year and thus isn't unlockable in similar devices. The iPhone 3GS has a feature-reduced Broadcom chipset limited to 802.11g by its hardware.
It's unknown why Apple has chosen to artificially limit the wireless speeds on the iPod touch. Throttling the player's speeds would prevent the iPod from cannibalizing iPhone sales, but 802.11n's increased bandwidth use also carries the possibilities of higher power consumption and heat in the confines of the thin case.
Other notable discoveries so far include a Samsung ARM processor whose model number suggests it's slightly different than that of the iPhone 3GS and whose flash memory is also made by Samsung.