Here is a new hard disk media player that takes 3.5 inch HD and uses the SATA interface rather than the PATA we see on the market today. It isn't wireless, but has a network cable port and does have DVI and component out (why don't these players have HDMI from Korea?). I am not sure on the chipset and the video format is a bit restrained with 720p WHVMD, HDTV@TP, DivX, MPEG4 and MPEG1/2 supported.

Here is the link.

CineDisk SM36HD (http://www.slashgear.com/cinedisk-nas-is-fully-featured-media-player-265935.php)

In the pic you will see it has a USB host port and optical sound out as well and I don't know what the interface looks like, haven't seen any screenshots.

An interesting feature of this player is that, according to this other thread already started on it (http://www.avsforum.com/avs-vb/showthread.php?t=870180), it can play original DVDs in a USB DVD-ROM drive (as in, it implements CSS decryption)... not really essential to users who'll be playing backed up DVDs from a NAS etc. but it could be useful sometimes.