The next iPhone and iPod will have a new low powered 802.11n chip, which will also support Bluetooth and Wi-Fi. iPhone and iPod touch models currently support 5GHz 802.11a networks or 2.4GHz 802.11b/g networks, forcing users who want the top speed of 802.11n — available on the latest crop of MacBooks — but compatibility with 802.11b/g networks to set up a 2.4GHz compatible network. At 802.11n in the next-gen iPhone and iPod touch model, the devices could allow the devices a channel bonding (using two channels at once to double the top reception speed) and MIMO (multiple-input, multiple-output) jolt. It just means that Wi-Fi, Bluetooth and 3G will not crawl like before anymore.
Via [Appleinsider]