This Jetson Nano is a crippled TX1, nothing more.
We have been building cameras with the TX1 and TX2 for 3 years now. We have seen things you people wouldn't believe ;-)) Now, can we cut through the hype a bit? Ready? Get your rant mask on.
The Tegra (aka Jetson) chipsets are quite buggy at a silicon level. If you find a hardware bug, nVidia will not acknowledge it, or help you (unless you're Nintendo for example, buying millions of pieces, of course)
The tx1, tx2, etc. are a nested maze of blackboxes, which you do not and will not have access to. For example, the camera ISP is accessible by THREE companies in the whole world. If you want to utilize the ISP, you have to go through them. Will those companies help you? Yes, for a very large fee. Why should they make the fee lower? They have almost no competition. OK, so you manage to get a sensor driver from one of those three companies. The sensor driver is, probably, also very buggy and poorly written. Maybe you can rewrite it yourself. The company who wrote the original one might help you anyway with ISP tuning (again for a fee).
nVidia doesn't give a damn about hobbyists or smaller companies. They will willingly mislead you with specs that are outright false and throw your company under a bus without the slightest second thought. We have seen this repeatedly with nVidia - their corporate culture really tends toward arrogant douchebaggery, second perhaps only to GoPro.
So, after all that, it seems that nVidia has produced too much TX1 silicon, so they've crippled it, and put it in a package that they're selling for $99.
I'm not really excited about it :-)