nVidia's been trying to push external GPU setups for a long while - but they largely haven't worked out from a value proposition standpoint. They're also kind of bulky.
Now if you adopt the Tegra X1 into an external GPU - it's smaller, cheaper and still more power-efficient than your typical external GPU. All the same, you can double the Switch performance to nearly 2 TF in this way and gain AAA support. All with a simple dock upgrade.
Of course, titles that really need that extra power can't really be portable, but a Vita like remote play solution is still nice. I think they go for all-digital distribution model.
The same way Switch was a revision of the Shield tablet - so too nVidia/Nintendo will roll out products that have the spirit of other nVidia offterings like gamestream and external GPUs.
I predict NX launches in 2017 - not 2016
