It's a different world we live in, when the main character on the cover of the playtest book is Groot.
There are references to a new "D616" system, but nothing beyond that. Matt Forbeck did the Brave New World RPG, back at the start of the millennium, though I don't really know anything about the system. Otherwise, he's mostly written supplements. And lately, he's mostly been an author. That doesn't seem like the strongest credentials.