We have just received information that AIC Partners are waiting for the GTX Titan inventory to clear up. After that happens the GTX 780 Ti 6 GB will be released. The stock of the GTX Titan is already in a somewhat slow trickle state because of the launch of the GTX 780 Ti. We believe that one of the major reasons why no 6GB version has been released yet is so that people still have sufficient reason to buy the GTX Titan. According to our sources as soon as the GTX Titan Inventory Status clears up the 780 Ti 6GB Variant will start shipping.