Dice’s Patrick Bach has said that the team has no plans on releasing an annual Battlefield game as it could kill the franchise.

Speaking to Gamerzines he said;

“The business goals for us are not to release a game every year,”

“To us, we need the time to be able to create the next game that
consumers will hopefully like. If we were to release another big
Battlefield title next year, that would mean that we’d have less than a
year to build it, and that would mean that we’d have to have another
studio building it for us, which would mean it wouldn’t have that DICE
seal of approval, which would mean they’d just have to release a copy of
the game we just released. Ugh, no.”

“EA would never force us to release a game every year. I think that
would dilute the vision of the franchise, and you will eventually kill
the franchise by doing that.”

Source: Gamerzines