With all the excitement of Battlefield 1 (along with some free DLC) tens of thousands of people are flocking back to Battlefield 4! BF4stats reports somewhere around 150,000 gamer's across multiple platforms back in the game in the past day. That's a lot of love for a game that's 3 years old...
Basically if you're a fan now's the time to jump back in and join in on the fun!