Today, dCS made Bartok 2.0 available for download, using the dCS Mosaic application as the means. Just update the Mosaic from the App Store, and it will do the rest. You will need to restart the Bartok after updating.
The result: the Bartok is already an incredible DAC with optional HP Amp. My impression of 2.0 is that it retains that excellence, but with even more of that indefinable attribute which I experience as presence, that sense of actually being in the same room with the musicians. It is eerie when it happens, and for me is the apogee of the audiophile experience.