Investors are rubbing their hands over the prospect that Apple may be introducing an iPod capable of downloading music and video via WiFi. The speculation comes after chip vendor PortalPlayer and Bluetooth technology company CSR said they added WiFi and Bluetooth capability to chips used in personal media players. We don't know which media player, but it may be safe to assume that it's iPod since about 95 percent of PortalPlayer's business comes from iPod related sales. iPod to date has only made a wireless debut on a couple of Motorola phones. Article