Translation of the D20 specs are over at:
http://www.misticriver.net/showthread.php?t=33909
iRiver is a big player in the Asian mp3 player market. Over there, nobody buys into the Apple iPod fud. iPod only has like 8% market share in Korea, for example. I really like my iRiver H320. It has been able to do photos and video for years now and through the Rockbox open source firmware, can now do a lot more, too.
The D20 looks to be primarily a dictionary with built in mp3 player. Like most iRiver products it includes an FM tuner as well. This is aimed at a really narrow market segment and I doubt much will ever come of it, frankly. It does not run wince and looks like it has a single SD slot for expansion. This is most definitely not the second coming of the HPC that we all dream about...