AppleInsider has pictures and details of the new Motorola ROKR E2 handset. Building on the E1, the E2 adds advanced features including A2DP Bluetooth Headset support, as well as USB2 connectivity for larger music transfers. It appears the E2 also no longer has the iTunes 100 song limit, based on comments from Apple executives about future iTunes handsets.
The E2 also adds a 3.5mm headphone jack, for standard headphone use.