Hmm, one major disadvantage though, to quote from Sony's website:
The NW-HD5 comes supplied with SonicStage3.1 software.
SonicStage is the biggest load of pants ever
I speak as the owner of an otherwise gorgeous NW-E99.
Still, native support for WMA and MP3 is a step in the right direction if true. Let's hope that the software for non-ATRAC formats is better than SonicStage (you'd think it couldn't be worse, but the MP3 Manager for the NW-E99 is basically a totally stripped down version of Win Explorer .....)