Looks like nVidia is trying to overflow the marked with the GTX 780 cards. It is a bit of rumor, but there it is:
"I know how stupid it sounds, but it looks like it’s true. I can assure you this is not a photoshop.
Apparently not much has changed. Upcoming NVIDIA GeForce GTX TITAN BLACK looks exactly the same as the original TITAN, only the logo is black, just like 780 Ti’s.
I can’t confirm the specs yet, but it’s almost certain we are looking at full GK110 powered card. 2880 CUDA cores, 6GB of RAM and full DP performance. TITAN BLACK will be released on February 18th for around $999 (yet to be confirmed)."
So, basically a Titan with black insignia, full number of CUDA cores
780 - 2304
Titan - 2688
780ti - 2880
…and full double precision speed. If this is true, then that would mean that nVidia crippled the double precision by software and on purpose It is actually pretty interesting to see that not even the expensive Titan got enabled all the cores - we just have to thank AMD for 290X cards that got all these cores to be even enabled.
Now with the precision thing it might be, that nVidia is targeting coin minners rather that gamers, as I highly doubt that the double precisoon is used in games...
But we shall see what happens. 18.2.2014 is not that far to the future