All content after Anthem's release will be free, BioWare has confirmed at PAX West.
BioWare has not detailed what kind of story content is planned for the game, although new quests can be expected. The emphasis on free story content also seems to indicate that there will be paid content, although it could be simply aesthetic or focused on equipment.
The first clues about these free expansions were announced with the announcement of the elimination of the season pass, which are generally associated with new story episodes.
The decision also comes with a change of policy of Electronic Arts after criticism last year with Star Wars Battlefront II and its aggressive strategy of microtransactions with loot boxes.
Anthem launches on February 22 on Xbox One, PlayStation 4 and PC.