To add to the rumours, Gamepressure have 'an inside source' who claims the game will be an action game with RPG elements: https://www.gamepressure.com/e.asp?ID=1758
Porcozaur is to be credited for finding this.
Guess we'll have to wait for the playable demo at E3 2018. I can only hope the equation Borderlands(FPS + RPG elements) = Cyberpunk 2077 proves to be false. Actually, I hope Cyberpunk 2077 >>> Borderlands(FPS + RPG elements)