When translated, the description roughly reads: "For the first time, Rayman becomes a comic book hero! Find the famous Ubisoft mascot in an unprecedented adventure in the company of Lapins Crétins. An event on the planet BD that sounds like a return to the sources for the rabbits, born in the universe of Rayman that celebrates this year are the thirtieth anniversary!"
According to @MaeDaGoof, Thomas Priou (one of the people making it) has confirmed that the listing is real, it's coming out on August 26, and it could be the FIRST of more to come!
Here's the "first rough research" at the bottom of the image; note the presence of Globox at the top right.
Edit: So I found the actual link to the retail listing, and here's what the full description has to say about it...
"You weren’t prepared? Rayman was even less so.
We knew the Rayman universe for its magic, its colorful world, and its strange creatures... But that was before. Before the Rabbids burst out of nowhere—with their legendary grace—screaming, flailing, bashing into things, and mashing every single button they absolutely shouldn't have touched. Unpredictable and, above all, hilarious, they come barreling in like meteors, pound on doors, leap across platforms, and slam right into walls. Amidst this chaos, Rayman tries to keep his cool—in vain—before realizing that he has just stumbled into the worst adventure of his life. How will he survive this invasion that defies the laws of physics, logic, and good taste? For these uncontrollable creatures multiply, catapult themselves through the air, and transform every corner of his world into a chaotic amusement park—and naturally, they think it’s absolutely brilliant!
For the very first time, Rayman becomes a comic book hero! Join Ubisoft’s famous mascot in an all-new adventure alongside the Rabbids. It’s a major event in the world of comics—one that feels like a true homecoming for the Rabbids, who were born within the Rayman universe, which happens to be celebrating its 30th anniversary this year!"
So, from the sound of it, this is going to be more about the Rabbids wreaking havoc on Rayman's world than what I initially thought. Perhaps like another season of Rabbids Invasion set in the Glade of Dreams? The description calling Rayman a "comic book hero" makes me think that he will either try to take down the Rabbids or that he and the Rabbids will team up for some big adventure, but either way... temper your expectations.

