There is little we can tell at this stage but what we can from info Tadd shared with us is this "The project centers around a Tyrannosaurus family unit who's territory is invaded by a predatory force, which leads to the inevitably confrontation of revenge and dominance. There are also a number of subplots mixed in throughout the book with animals like Triceratops, Quetzalcoatlus, Dromaeosaurus, and even Dakotaraptors, among many other animals. The story is set during the Late Cretaceous Period in Laramidia (western North America)."
Tadd admittedly isn't an expert on dinos but he did try his best to be as accurate as he could. Tadd also stated "The Tyrannosaurus Rex was always my favorite, as much of a cliché as that probably is today, so I made it the main character. I tried to utilize current standing theories as well as current characteristics we see displayed in nature today in forming the dinosaurs actions throughout the story."
There wasn't much more he could tell us other then "the story is wordless, so no narrating dialog or talking animals. Just body language and reactions to tell their story." The book will probably be released in early 2017, the story will be 140 pages long with an additional Dinosauria field guide in the back that gives the names and dimensions of the animals from the story among other tidbits of information. "It's a passion project for me, so I'm really fortunate to have the support a fantastic publisher like Oni Press. They're literally making it possible for me to put this out into the world. They're the best! So when it is eventually released into the wild I really hope people check it out and most of all enjoy it!", Tadd.
We definitely look forward to seeing this when it is released, you can check more as Tadd posts updates on his site here. And a big thanks to Tadd for the info.