Hm, am I missing something here? This just seems like a less complete/more raw version of Soekris DAC with lower precision resistors... the Soekris already has sign magnitude and programmable filter chip, and with FIFO/reclocking. Same 24 bit, 3.072MHz oversampling as well. I believe they solved the DC output problem already as well so it can be DC coupled without blowing up your stuff.
Edit: Hm, maybe it's for people who want to do it themselves (DIT?) Looking forward to see how people use these modules.