Taking inspiration from Left 4 Dead and Escape From Tarkov, blending together elements for casual and hardcore gaming crowds, 314 Arts have announced Projekt Z.
Developed in Unity, they've already confirmed their plan to fully support Linux with Projekt Z and even quite early on, it's looking pretty impressive from their first announcement dev-blog style video on it. Their aim, from what they tried to explain about it is to have a mix of story and tactical shooting along with hub building and people recruitment. While a small team, they're using some of the more advanced rendering bits in Unity to make it look rather modern and slick.
The tactical side of it definitely sounds interesting, from the minimal HUD to weapons based on magazines so if you reload with ammo left eventually you pull that previous magazine back out to reload with. Along with weapon jamming, stealth elements, leaning around corners, weapon recoil and so on.
Once there's more info out there on it, we will let you know. We shall be following along given the promise.