Apple seems to be laying the groundwork to introduce high-capacity, low-power 802.11n Wi-Fi to the iPod Touch, and presumably to its 3G-enabled companion, the iPhone . The change would be a huge jump in performance for users of both devices, which now use a Wi-Fi chip that supports 802.11b/g, with a throughput of less than 25Mbps on the 2.4GHz band. But the change would almost certainly mean having to buy a new Touch or iPhone with the 11n chip, and some observers say Apple also needs to upgra
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