The teases over at iriver are ready to show you what they've got: the neon-colored U100. We reported on the PMP, along with the P100 and the D2000 last month, but it looks like iriver is going to leave us guessing on the last two. The U100 sports a 3.1-inch (320 x 480) touchscreen, up to 16GB of internal memory, WiFi, microSDHC, and an FM tuner for those who still listens to the radio. It plays 720p video and touts 50 hours of battery life for audio playback and 11 hours for video. iriver isn't ready to give us all the details quite yet -- an official release date and pricing are still under wraps -- but they have provided