When will an improved switch-hardware be released ?

[Bofferbrauer2]

I'd say 2021

With the hardware flaws in the Tegra chips I'm sure Nintendo asks NVidia to iron these out first, and as a result should recieve a true custom Tegra chip

My expectation is somewhere around this:

TSMC 7nm process (Nintendo tends to use an older, proven process and hardware, by that time 7nm and what I write below hopefully fits that bill to them)
4-6 Cortex A75 CPU @ 1.5-1.7 Ghz
384 Turing Cuda Cores @400 (Handheld)-800Ghz (Docked) or 256 Pascal Cuda Cores @600-1200Ghz
8GB LPDDR4-2666, 128bit connection (the LP variant isn't specified higher than that, sadly)
128GB Flash Memory
5000-6000 mAh internal battery

In 7nm, a configuration close to that should get close to XBO S power in docked mode and slightly more powerful in handheld mode than the docked mode now without consuming more, and the stronger battery allows for longer game sessions in handheld mode.