Yes.
The docs do say “and more”. I just created a PR to add the RX-V685 to the list.
I am very happy with it. It works perfectly for selecting a source, controlling power and volume. Additional functionality can be added using restful commands and sensors. See: Yamaha Restful commands
Yes you can. The two zones are separate media players with separate source, power, volume controls. And Zone 2 does have the option of ‘main zone’ as a source if you want them playing the same thing.