I'm writing this as seriously as I can, not being a fanboy: What is the purpose of the Titan X at this point? It lost its DP performance that made it a fantastic workstation-gaming hybrid. Also, it really sucks for people who bought a Titan X just a little over a month ago? That's ~$350 down the drain pretty much. Yea the Titan X has all that extra VRAM, but for what? 3 4K displays maybe, at which point a 980ti SLI would probably lose by about ~5% due to a few less CUDA cores.
Again though, for most customers, the 980ti is the obvious choice. I just feel like nVidia totally screwed over most of their Titan X customers now. And why? Well, I really think the 980ti will be the cheaper answer to AMD's Fury or whatever Fiji will be called, Really interested to see how it will do. If Fiji beats the Titan X/980ti, it's rumored $800 price point would make the 980ti a somewhat compelling offer depending on how well it does.
In the end, I'm loving this competition!