The OLED display, just sort of imbedded in the shell with no distinct screen area is probably the coolest feature of the whole thing. Sony has smaller RAM MP3 players with the imbedded OLED look like this at Target already. Unfortunately, being a Sony, it'll command a premium beyond it's specs, just because it's Sony.
Otherwise, I don't see much that's different from other players. We will be seeing more cool industrial design though as more and more consumer electronics try to "out-iPod" the iPod for "slickness" and gee-whiz factors.
Of course, what a 32 year-old fuddy-duddy like me wants besides Mp3 is a good digitally tuned AM radio feature so I can listen to political talk shows at my desk while at work, and have it act like one of those Satellite radios that records shows onto the hard drive so I can "Tivo" the radio.
I've been looking and have seen plenty of MP3 players with an FM tuner, but none with AM. I guess they figure that no one hip enough to have an MP3 player listens to AM. I have a nice little Radio Shack "Optimus" AM/FM radio about the size of a Zippo lighter that runs for weeks from a single AAA battery, but it gets lots of interference when you carry it, changing orientations. And it picks up lots more interference from my work PC, 60hz AC lines, flourescent lights etc.