Other Avalanche games that are likely to make an appearance at the E3 show include Rage 2 and possibly its own-published, Generation Zero, a first-person shooter that's set to be released at some point in 2019.
It appears that another game from last month's Walmart Canada leak is real.
It certainly seems like Valve had this ad ready for the announcement of Just Cause 4 and someone sent it live too early. We should see an official reveal for Just Cause 4 at E3 2018 at Square Enix's E3 2018 event.
Simona Halep battles past Garbine Muguruza to reach French Open final
Now she has another chance to break her duck when she takes on American 10th seed Sloane Stephens in the final at Roland Garros. On Thursday, it was more of the same as the 25-year-old capitalised on her friend's big match nerves.
Just Cause 4 will bring the total number of Avalanche games in development to three, one for each major studio within the company.
In the background of the image - grabbed by freelance gamers journalist, Steven Oz - you can see a Square Enix logo, suggesting that the Japanese publisher will continue to act as the publisher for the famously independent Avalanche Studios. We should expect more of the same from Just Cause 4, only bigger and better looking I imagine.
The only other unconfirmed game (apart from Dragon Quest 2, which is nearly certainly a typo of some sort) is Borderlands 3, which is no secret but so far there's been no indication it's going to be at E3 or out this year.
What developer Avalanche Studios would much rather we be talking about right now is Generation Zero.