I only wish this was Maxwell coming out next year, not Kepler, which was supposed to be in Tegra 4, but you know Nvidia and their delays...I also hope they don't screw this up by making the GPU very inefficient. If they do that, no one will want it, so this strategy will be irrelevant. They say it's very efficient, but over the years I've become a lot more skeptical about stuff Nvidia claims, at least in the mobile space.
If they can convince Samsung to use Kepler for Exynos 6, or Maxwell for Exynos 7, that would be a huge win for them. Samsung has been a little lost lately in terms of what GPU's to use in Exynos SoC's, so this may be Nvidia's window of opportunity, if they can prove their GPU is the best.