First off, thank you so much for this incredible game. You've said that The Missing Link DLC will be directly accessible from the main menu, but will it also appear automatically at 'that' point in the normal game, slotting in where Jensen goes 'off grid'? If so, will the player's augmentation choices during the DLC stages be permanent, and carry through to the rest of the game? For what it's worth, I really hope the answers to those two questions are both 'yes'.
Anonymous

DBed says:

The Missing Link will not appear in the main game narrative, and your augmentation set in The Missing Link will not carry over to the main game after you’ve completed it. While gameplay-wise The Missing Link is not tied back into the main game, narratively you will find out things that will shed some much needed light on some of the …shadier sections of the Human Revolution world.”