Beta download available now, Production release soon.
see http://support.bibblelabs.com/webboard/viewtopic.php?t=10943

From Bjorn Roslett's online D700 diary:

: I have had extensive communication with Eric Hyman of Bibble
: Labs and agreed to provide him with test D700 files, in return,
: he promised Bibble would be supporting D700 in the very near
: future (i.e., even before the camera is officially available to
: the general public). While NX2 produces excellent results with
: D700 files, the software is painfully slow on my Quad G5 Mac and
: the workflow and UI are not exactly to my liking.