Not so sure... Maybe it's a part of the Beosound5 Encore where the ICE module only serves as headphone amplifier...
But it could be something more interesting : as they speak of USB, it could be a module for some Beolab PC : the issue of Beolab 4 PC (compared to B&W MM-1 for instance) is that they don't have their own DAC. That module could solve this issue.
Going further, we could imagine some "BeoNet inside" Beolabs : only an ethernet (or WLAN) connection, and you can diffuse your music everywhere in the house with only one audio center (and a Beo6 remote)...