All future content will be free for both Premium and non-Premium players.

DICE is working on a lot of extra content for Battlefield 4. We’re getting night maps, a brand new community map, and some unannounced content as well.
http://bf4central.com/2015/05/free-b...eld-4-content/

La cati bani au facut pe jocul asta ar cam fi cazul sa ne mai scape si noua cate ceva "free of charge".