Yes there is native 4 finger swipes to change desktop on Wayland. And I wrote an extension to add 3 finger gesture support for an action of your choice. Check it out here: https://github.com/mpiannucci/GnomeExtendedGestures

I can't find much information, but things like scrolling, switching work spaces etc. worked out of the box for me when I was testing Fedora 25 a month or so ago.

Two-finger scrolling works really well on Fedora with Wayland, in fact at some point it appears to have become default behavior (at least on my machine running the latest version).

Fedora uses libinput. Of course, it is not without issues from those, who would like to tweak every little setting. Libinput is designed to be as automatic and configuration-less as possible.