Palm and Cingular have announced the availability of the Treo 680. Some reviewers have called the 680 a "low-end" model, but that's not entirely fair. Palm is aiming for fresh blood with this Treo. It's specifically designed for users who are new to smartphones. The 680 is essentially the 650 with some incremental improvements: more memory, stereo Bluetooth support and, notably, no more external antenna.