They'll use a Tegra X2 for revisions, I'm more certain of it now the more I think about it.
Nintendo fans are too over-awed by new technology they think it automatically must cost way more, that's often not the case. In 12-16 months the Tegra X2 likely won't cost much if at all more than the Tegra X1 does now and virtually all the R&D has already been done on the chip.
Nintendo not using a stupid custom chip gives them options that they didn't have with a lot of their past hardware.







