https://www.gamespot.com/articles/battlefield-2018-game-to-be-revealed-this-month/1100-6458872/

An Easter egg in Battlefield 1 has led to a teaser for the next game in the franchise. A reveal date has been set for May 23, with the tagline "Never Be the Same." Further details are still unknown, but we should be finding out much more about Battlefield 2018 soon.

Eurogamer reports that a recent update to Battlefield 1 added a button system to the Fort de Vaux map, which corresponded with a door marked "Isolement" (roughly translated as solitary confinement). Pressing the buttons in the correct order opened the room to a cell, with a painting of a white horse and some leaky pipes. Those pipes were dripping in morse code, which the community decoded to spell out the URL ea.com/neverbethesame. That site has the May 23 date teased, along with the #Battlefield hashtag to make sure there's absolutely no confusion.