This means that now the three major GUI toolkits for Linux (GTK, Qt and now Electron) support Wayland natively.
Hopefully the Chromium Embedded Framework (CEF) will follow suit soon [1] which should make it possible for Steam and Spotify to run natively on Wayland too (as soon as they upgrade, of course).
[1] - https://bitbucket.org/chromiumembedded/cef/issues/2804/ozone-wayland-x11-support