Bethesda has detailed the first downloadable content to be released for Arkane's Dishonored. The DLC will available simultaneously for PS3, Xbox 360 and PC; priced at $4.99 (400 MSP), it will feature ten challenge maps.

Bethesda also mentioned two additional servings of DLC that will be released early next year. These DLC packs will be story driven, with the first arriving in the spring of 2013. Read Bethesda's write-up below for more details.

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.

Dishonored, developed by Arkane Studios and published by Bethesda Softworks is available now for the PC, PlayStation 3 and Xbox 360.