We're not quite sure what's going on at Amazon France right now. Either they've pushed a few listings live earlier than they should have, or there's a new wave of misinformation on the site. Overnight, Amazon France added the following listings for multiple publishers. The following list was discovered by Nintendalerts.
Warner Bros - Switch and Xbox One
Warner Bros - Switch, PS4, Xbox One
Bethesda - Switch, PS4, Xbox One
Bethesda - Switch and PS4
Bethesda - Switch and Xbox One
Square Enix - Switch
Square Enix (2) - Switch
Ubisoft - Switch, PS4, Xbox One
Ubisoft - Switch and Xbox One
Capcom - Switch
Take-Two Interactive - Switch, PS4, Xbox One
That's a lot of big-name publishers/developers, along with a lot of Switch support. As you can see, there are no specific games mentioned, which makes each listing that much more mysterious. Throw in the fact that we're close to what is traditionally E3 time, and you can see why people are getting excited! Let's hope these listings turn out to be true, and aren't just another mistake by Amazon.