I have just been looking for / researching a music server for my system. The HDMI connection will be for its I2S connection. I have the W4S DAC2 and the STP-SE pre, and this announcement will make my search a lot easier. The W4S gear tends to be be good quality, decent pricing, and bullet-proof - just my kind of product. Oh, and they are here in the USA, which is another plus.
Hoping it will access the NAS directly, and not require a running server process. Then the ALAC music on the NAS will work for the W4S server at my system, and still be available to the Sonos for the rest of the house.
I also hope it will play ALAC files. Most of the newer Linux based players won't play ALAC (Bryston, Auraliti). The one I have found is at www.sonore.us, which will be the main competition for my music server dollars.
Looking forward to the reviews