Here is yet another Sony Walkman branded mp3 player. The lipstick like Walkman NW-E013 is a small USB thumb drive sized mp3 player that weighs in at under 30g and sports 1GB of storage.
The lipstick shaped player sports a 3 line OLED display and around 30 hours of playback. The Walkman NW-E013 should retail for around $100 (due for relaese in Japan in December) if and when it reaches the US.
Source: Sony Japan