It's Prey Day, and you shouldn't feel bad if you weren't aware. That's because it's seemingly the first ever Prey Day, as it's an occasion that Bethesda now celebrates because March 15, 2032 is when Morgan Yu woke up at the very beginning of Prey. (For what it's worth, Prey released on May 5 last year.) Bethesda's using the faux-holiday to tease what seems to be an upcoming add-on.
The Arkane Twitter account posted this picture today, which shows the studio's staff with gross red Prey eyes:
via destructoid https://www.destructoid.com/arkane-uses-gross-red-eyes-to-tease-prey-dlc-494477.phtml