We all know that aside from a memory configuration and a GPU rebrand, there will be little different inbetween the Titan X Pascal and upcoming GeForce GTX 1080 Ti. Nvidia did however claim a few changes on cooling and power design.

A photo has leaked onto the web  comparing the two. Both cards eem to use PCB PG611, you'll spot that the DVI connectir was dropped to add room for better air exhaust of the updated vapor chamber design. Board partners will likely add a DVI connector. 

The GTX 1080 Ti features a 7-phase power supply same as Titan X yet has a dualFET design. TITAN X has less advanced power delivery.  GeForce GTX 1080 Ti will be available this month, priced at US $699 for the FE editions.

Nvidia GTX 1080 Ti vs Titan X PCB Explored