Will gamers see that much of an improvement? The PS4 and Xbone being x86 hardware is nice as the excuses on why a port to PCs can't happen, but both consoles are pretty sad when compared to current mid-range PCs let alone a high-end rig. The Xbone one is struggling to hit 1080p while the PS4 is hitting it, but at 30fps. This is matching or lower than the performance of a current mid-range PC and the performance gap will only widen.
It's good that AMD was able to get the contracts to get income as they have been struggling lately, but the Radeon 7000 series was a big of a disappointment, and were rumors of Nvidia branding the GTX660 as the GTX680 and the Titan was supposed to be the original GTX680. AMD new series is all rebranded cards save for the R9 290 and 290X. The cards a cheaper compared to Nvidia's offering, but they run hot and loud. Plus this article is discussing performance issues so maybe they aren't as good as the original look into them lead everyone to believe.
AMD really needs to buckle down and hit one out of the park. The Bulldozer was a dud, so the processor side of the business is also without a hit. I thought we might see the beginnings of an PC architecture redesign once you look at the new consoles, but I don't believe that anymore. I'm not hopefully that Kaveri is going to be the strike again Intel that AMD needs like the glory days of the Athlon 64 vs the Pentium 4, nor AMD releasing a GPU in the coming year that will force Nvidia to stop coasting along and release a highend card that is 80% of Titan SLI performance on a single card.