I can't decide whether this is supposed to compete with the PSP or the Game Boy Micro...or both. Either way, the Cenix GMP-M6 features a miniSD slot, 2" widescreen TFT-LCD display, FM tuner, 6 hours of gameplay (20 hours of music playback). It supports MP3, WMA, Ogg, Audio ASF, MPEG-4, and IMA-ADPCM formats.
It's reported that there are 50,000 games available for download (that sure beats both systems, doesn't it?). Selling for only $193, you can get this tiny device in either black or white (whenever it becomes available)