Bioware's official website, appeared a little paragraph that explains some of the content of the Mass Effect Trilogy with its details. We expose them better here reminding you that this edition will be released on 9 November.

• Mass Effect will not contain any additional content released over Xbox Live, but they will remain available for download from the Marketplace. The same will happen for the DLC released for the other games in the trilogy.
• Mass Effect 2 will contain your pass to the Cerberus Network and content Zaeed – The Price of Revenge, the Firewalker Pack, the armor of Cerberus, the Arc Projector weapon and mission Crash Site.
• Mass Effect 3 instead will contain only the Online Pass.
• All games will be compatible with their single counterparts: now you can play multiplayer Mass Effect 3 with owners of the original game.