Will we see a price crash on the Titan X now that it's been surpassed by the 1080 ?
I don't think so. It was announced a month ago or so, that 980Ti production was stopped. I believe that the Titan X production was stopped even before then, so it probably won't become any cheaper than it is now as all the stores will feel the shortage of them anyway.
Real world benches are needed and if the 1080 is on par with a clocked 980ti give and take I see no reason to get one...
Might aswell wait until 1080ti.
But then again, if we wait until 2017 to get the 1080Ti, then it's better to wait for another half a year and get a 1180. Honestly, I don't think it's worth the wait anymore. Yes, it will have HBM2 and more power than 1080, but the price will be extremely high. This time the performance leap between 980 and 1080 is so big, that there are only two ways how it can end:
1. Video Games will suddenly become even more demanding and that will kill off the Kepler completely and will greatly reduce the performance of Maxwell.
2. Video Games won't become more demanding so sudden, but 1080Ti and Titan won't be as powerful as everyone expects them to be.
Don't forget that they are already working on the next generation which will come after pascal, for 2017 Q3/Q4-2018 and the 1180 will have to be even more powerful than the 1080 Ti. How would they justify the upgrade to those cards, if video games would not become more demanding? On the other hand, there might not be a Ti version at all, maybe just the new Titan with HBM 2 priced at £999 or £1199 or whatever... AMD won't be an obstacle until 2017 for sure and even then I expect them to have the performance of 1080. At the end of the day, 1080 is already more than most of us need. It also has a new SLI technology which allows for the combination to achieve even better results. It has DP 1.4, it's all future proofed already until at least 2018.