Sony announced the Walkman Bean MP3 Players in August.

Sony NW-E305 (512MB) and NW-E307 (1GB) Walkman are available for pre-order on Amazon.com and are supposed to ship soon (says the product page).
Besides the unique organic look this Sony MP3 players feature a cool 50 hour battery life.
Other features include OLED display, high-speed charging and FM Tuner. The Walkman Beans play MP3 and MP3 and ATRAC3/3plus music files.

Amazon.com sells the NW-E305 for $119.99 and the NW-E307 for $149.99. The Sony Walkman Bean NW-307 (1GB) is available in pink and black.

The Sony Walkman Bean NW-305 (512MB) is currently available blue and white.