Check out the Sony A series, limited edition NW-A1000. A 6GB player in jet black, it's small, smooth and retro looking and has a 128x128 pixel OLED. Measuring 55x15x88mm it weighs in at just 109 grams. But here's something odd, it supports MP3, ATRAC3 and ATRAC3plus, but for WMA, you'll have to add an upgrade which won't be released til December. Plays about 20 hours of music on a full charge and costs $280.
Sony A series NW-A1200/B with 8 GB storage [New Launches]