Battlefield 5 is reportedly going to be a tactical shooter set during the World War I era according to a Swiss retail listing.
The listing can be seen on Swiss site World of Games, and also lists the release date as October 26th, 2016 for PS4, Xbox One and PC. That is a Wednesday, an unusual release day for games, but it is also the Swiss date and conforms to a US released date of Tuesday the 25th, which is a standard day for games.
At the top of the page, you can see the listing state “Mehrspieler Taktik Shooter im 1. Weltkrieg” which translates to tactical multiplayer shooter in World War I. We can’t confirm or deny any of this yet, but we have reached out to DICE and EA for comment.