It looks like Square Enix and Bandai Namco are finally ready to show us two new, never seen before games at the upcoming E3 2018, Outriders and Call to Exists, and both of them are equally interesting.
Bandai Namco has filed a trademark for Call to Exist in Europe (via European Union Intellectual Property Office). The company has yet to announce what that is but it's possible it is the title for its August 2017-announced collaboration with Vampyr and Remember Me developer Dontnod.
As mentioned before, Square has trademarked Outriders. There's a chance you've heard about them before, as it's the name of the vicious alien race from the Marvel universe that was recently seen in Avengers: Infinity War. Considering that Square works with Marvel and Crystal Dynamics on The Avengers project, there's a possibility Outriders has some connection with the realm of comic books.
Two weeks ago, Square Enix announced that they will be streaming a special video presentation that will go live on Monday the 11th of June at 10AM PDT/ 1PM EDT/ 6PM BST. That presentation will be available in Japanese and English and streamed on YouTube, Twitch, Mixer, Facebook, and Twitter.
There's also the third option, and Outriders is a game that's currently being developed at People Can Fly. The Painkiller studio announced a while ago that they are working on "a new IP, an AAA shooter developed alongside Square Enix." Of course, maybe we're talking about the same thing and Outriders is a big budget shooter made for Marvel and published by Square, but it's highly unlikely.