Dragon Age: Inquisition will no longer be releasing DLC for the PS3 and Xbox 360 versions of the game. Everything going forward will solely be released on PS4, Xbox One, and PC.
More and more game companies are making the full transition to the current generation of consoles. The idea being that work on older systems holds back what could be done on the new ones, either via technical restrictions, or simply by spending developer time.
While the PS3 and Xbox 360 have a large install base, the ones on PS4 and Xbox One are steadily growing, and the gamers with the new systems are wanting the latest and greatest in terms of visuals and features. To get that, it seems, developers will have to cut ties with the old generation to focus on the new.
EA and Bioware are sympathetic to those that purchased the last-gen version of Dragon Age: Inquisition though, so they have created a tool to help ease the transition, if they wish to continue receiving DLC. Using the feature you can upload your Dragon Age: Inquisition save file and profile to the cloud, which can then be downloaded into the PS4 or Xbox One version of the game. The upgrade has to stay on the same account, so you can only go from PS3 to PS4 and Xbox 360 to Xbox One.
For full instructions on how to use the save import feature click here.