A new Broadcom chipset spotted on a Chinese website may be a component of future Mac updates, bringing 802.11AC (known as "Gigabit Wi-Fi") and Bluetooth 4.0 to new models on a single chipset. Not only will the chip handle all wireless communication for future Mac models, but the new chip appears -- at first glance -- to be backward compatible with similar parts in recent models, opening up the possibility of aftermarket upgrades.
