The Sony OLED walkman is now shipping in the US, through Amazon, and at a lower price than published before: the 32GB version is available for 367$ (sold through digital-audio USA, who are importing them from the UK. Amazon's own walkmans will be released on the 3rd of July). 

Sony X-series OLED walkman

The X-series OLED walkman is Sony's best-sounding walkman ever, with a 3" 432x240 OLED touch screen, Wi-Fi, noise-canceling and more.