Dishonored's first piece of downloadable content called as "Dunwall City Trials". Dunwall City Trials adds "10 challenge maps" that will have players battle waves of enemies, participate in time challenges and "a gravity-defying run of drop assassinations." The second and third DLC will offer story campaign. The second one will focus on Daud, an assassin with supernatural capabilities.
Bethesda has the following info about the DLC on their official blog.
Dishonored: Dunwall City Trials, being released in December for $4.99 (or 400 Microsoft Points), will include 10 challenge maps that will test and track your combat, stealth and mobility skills. Ten distinct trials await challengers – including an arena battle against waves of enemy AI, a gravity-defying run of drop assassinations, and a race against the clock. Dunwall City Trials also features a whole new set of achievements and trophies as well as a global online leaderboard that will establish the greatest assassins for each challenge.
The second and third add-ons for Dishonored will be coming in 2013 and will each feature story-driven campaigns. Pricing on these two packs will be revealed closer to launch.
Daud, the leader of a group of supernatural assassins known as ‘The Whalers’, will be the focus of the second add-on pack, scheduled for release in early Spring 2013. Make your way through new Dunwall locales and discover Daud’s own set of weapons, powers and gadgets in this story-driven campaign. How you play and the choices you make will impact the final outcome…
Additional story details on the third add-on pack will be revealed closer to its launch next year.
Have you finished Dishonored already? Bethesda wants you to finish the game in both action and stealth way.