AMD prices are supposed to be lower than they currently are but bitcoin mining have encouraged etailers/retailes to put up prices. The price cuts on nvidia have been good however I still maintain that certain 290s are better value than most (not all, certain 780s are much more worth it) of the 780s. Not all of them though. Also people still go on about the heat issue and I imagine that has affected sales a bit. Also only the Titan BE seems likely to be the only one to come out that AMD don't have an answer for. This is because the titan is more a compute card than a gaming card. The 790 (if it happens) would most likely be 2 lower clocked 780s. If the 790 does appear, I imagine AMD will produce a dual 290 card later on, much like what happened with the 7990/690 war. the Dual 290 will be hilariously hard to cool if AMD go about the cooling like the did with the 290x though.
Off topic,
Well, its hard to say if AMD predicted the 290 prices to jump up due to bit coin mining. Whether it did or not, the card is selling like crazy, and AMD is going to profit from this big time. That being said, their stocks were at all time high around new years, but its already going down big time to almost where it was a year ago. Because they although they are sold out, they were selling the cards with little profit, while retailers were bumping up the prices. AMD took the hit and bad publicity for all that. Enough that people stopped waiting for prices to lower and moved on to buy nVidia.
If the bitcoin mining craze dies down, or miners go from AMD to say something else next, then AMD is going to screw its next lineup with insane amount of used cards being available on eBay. Not to mention people like me who were dying to buy AMD now have a bad taste in their mouth and moved on to nVidia. These people will likely not go back to AMD because of the bitcoin mining craze.
On topic;
As for the Kingpin, I am pretty sure EVGA said that its aimed at LN2 overclockers. Although, unlocked voltage will make it awesome with custom water cooling.