The above video made some very astute observations that are worth interest...
The critical detail is that the only USB C port is on the top. The port on the bottom is now a different, larger port. By happenstance it resembles an existing GPU adapter with a gap in the middle. This, combined with the back of the dock being chunky and having exhaust grills, raises alarm bells for me. I'm paying attention now.
Combined with some other stuff I've seen. It seems like IR aiming is coming back. The new joycons have camera like Wiimote between SL/SR, when you hold it sideways. If you slide on the wrist strap attachment it has lenses/mirrors in it to hold it like a wiimote aiming instead.
So Switch 2 will finally give us the 1:1 IR pointing AND good graphics I thought had been left behind for good. Which is fantastic for FPS games, Wii remakes like Galaxy 2, and people who don't wanna recalibrate constantly.