Please note that Square Enix has just released on the Marketplace "The Missing Link", the Italian name of the new mission added Deus Ex: Human Revolution known so far with the English title "The Missing Link". The expansion can be purchased at the price of 1200 MSP for an overall size of 1.93 GB ( web link ) and, according to the developers, will add about 5-6 hours of play for the title. Below is a description of the content provided from Xbox.com.

"After being tortured by men of the Belltower, which shut down its upgrades, Adam Jensen can only rely on his innate abilities to escape from a freighter headed for a destination unknown. While fighting on the ship, he discovers a new, unexpected background of global conspiracy. Play as Adam and discover new and mysterious allies, enemies without scruples challenge and discover what goes on behind the scenes during key events of Deus Ex: Human Revolution! "