EA announces details on Trespasser, the final planned DLC for Dragon Age: Inquisition, saying this is their first attempt at such an "epilogue," which "marks the end of our time with the Inquisition." They don't specify when this will be released, but note that this announcement is a bit earlier than their previous DLC reveals so players can prepare for its requirement of a character that has completed the game's main storyline to play the epilogue. They also announce plans for a new patch coming to the game on all platforms which will include some new free content. Here's a trailer and here's the announcement which includes images and covers each bit of news. This is how they describe the expansion:

Our final announcement today was of Trespasser, the final DLC for Inquisition. It's something we haven't tried before: an epilogue. Trespasser tells an entirely new story, set two years after the main game. The story explores what it's like to be a world-saving organization when the world no longer needs saving. It's a chance to meet and talk with old friends, to uncover a new threat, and ultimately decide the fate of the Inquisition you worked so hard to build. It might just contain hints about the future of Thedas, too.

To play Trespasser, you’ll need a character that has completed DAI's main storyline, which is partly why we're announcing it a bit earlier-from-release than the others.

This content marks the end of our time with the Inquisition. I sincerely hope you enjoy it.