Tom's Hardware and @kcarbotte, you really need to correct the misrepresentations in this article. You're spreading misinformation.
The bits about power draw (it's not lower than maxwell, it's higher - just more efficient) and clock speed (you've quoted an "unbelievable 2.1 Ghz", which we know is the result of a significant overclock) aren't helpful. The bigger problem though is the performance claim. The first question everyone has about a new card is, "how fast is it" (closely followed by "how much does it cost"). Yet the only statement about the performance of the 1080 in your entire article is the one claiming "twice the performance of a Titan X" (along with TFlops but nothing to compare them against). You missed the most important part of that sentence, which made clear it was referring to performance of Pascal's "special features".
For comparison, AVX2 in certain situations can approach twice the performance of the initial AVX. But if I start a thread stating that an i5 4670K (with AVX2) is almost twice as fast as an i5 3570K (AVX) without context, I'd rightly get pilloried for spreading misinformation. Yet that's exactly what you've done in this launch article.
Nvidia actually claimed the 1080 was faster than 2x980s in SLI. That's far, far short of double Titan X. They also put a slide up (which you have in your article) which clearly shows they're not expecting anything like double the performance of a Titan X. Here's your own slide:
http://media.bestofmicro.com/G/P/579913/original/new-king.jpg
Who knows how Nvidia is calculating "relative performance" in that chart, but it's a safe bet that if they're really expecting double TitanX/980ti performance in games, it would be reflected there.
There's loads of people on the forums going crazy with the double Titan X performance claim, and Toms HW and this article is culpable. You really need to correct or ammend it.