Yes, DLC’s not the full games, which are required to play the additional content.
Furthermore, not all DLC’s are released at the same time, according to EA:
“Over the next few months, we’ll be giving away previously released expansion packs.”
In other words, starting May 3 until May 10, you will be able to download for free the Battlefield 4 DLC Dragon’s Teeth, and the Battlefield Hardline DLC named Robbery.
If you wish to get the free DLC’s, just head to the Battlefield site.
This announcement looks like a good marketing strategy knowing that on May 6, EA and DICE revealed the new Battlefield game.
Furthermore, the offer comes two days after Activision announced Call of Duty: Infinite Warfare.
Right in the middle. Don’t you think?