Sony is showing a new Walkman, the NWZ-S754 pocket-sized media player to the IFA 2010 exhibition in Berlin, Germany. The fact that this model was not announced before. Engadget says that the contrast looks so good that it could be an OLED. It looks very much like the NW-A840 which do have a 2.8″ OLED

The player is coming in black and white. New Sony Walkman NWZ-S754 PMP can pack a small display with resolution of 320 x 240 pixels. According to some sources, they are used organic light-emitting diodes (OLED technology). It is built in 8GB onboard memory. Sadly, there is no info about its price.