User blog comment:Jimeee/PS3 release dates for Dragonborn, Hearthfire and Dawnguard - Euro Update/@comment-166.137.156.18-20130207190351/@comment-4237253-20130207193450

Hearthfire adds three new homes, and allows you to upgrade them with a myriad of supplies. In addition, you can also adopt.

Dawngaurd is slightly larger, adding new locations to the game along with a new story.

Dragonborn adds an entirely new map, reminicent of Morrowind, and from what I've heard, it's amazing.