se7en7thre3 on 24 November 2016
Xavier/volta tegra will have double performance (x2 cores = 3tf 16bit, 1.5tf 32bit) of the pascal/parker tegra. So under the assumption gen1 switch has a 720p screen I do expect a "pro" 1080p Nintablet, maybe as early as holiday '18. .
Then possibly offer that same xavier chip in SCD format, a cheaper upgrade solution, limited to docked mode. I'd guess that would shut off the gpu in the Switch OG tablet, rather than work in tandem like many wished for.
