Any idea why Sound Devices 744T stops at 96 kHz FLAC?

Hi folks,

I'm looking for equipment that I can use to record at 192 kHz in the  
field, powered by batteries.  During my search, I've come across the  
Sound Devices 7-Series Recorders.  The 744T supports recording to  
FLAC, but only at 96 kHz, not any of the higher rates that it  
supports up to 192 kHz (or even 200 kHz).  Does anyone have an idea  
why?  My hunch is that since this thing can record 4 tracks at 192  
kHz, then maybe the on-board processor cannot run the FLAC encoder  
fast enough to keep up with the data.

Hopefully this is something they can fix with a firmware upgrade.   
But if it is a CPU speed issue, then I guess there's no way to  
improve it without a hardware design change.

Brian Willoughby
Sound Consulting

P.S.  I think the Sound Devices 744T should be on the flac home page!