User blog comment:The Milkman/Indoctrination Theorists Say the Darndest Things, Part II/@comment-98.240.62.123-20121205183510

Having said that, the consequences of Shepard's actions could play a huge role in the Mass Effect 3 storyline, but it's too early to tell for sure. With less than 9 months on the calendar, and little indication of how much creative control the DLC creators have had with respect to affecting the storyline of the upcoming chapter in the sci-fi epic, it might only have side-quest levels of consequences in the end. (Mass Effect 3 designer Manveer Heir has since told me that Arrival's story "was driven/approved by the head writer so it's all canon & relevant.")

http://www.destructoid.com/review-mass-effect-2-arrival-dlc-197513.phtml

- Arrival is canon.

http://www.youtube.com/watch?feature=player_detailpage&v=ldIJFRvDUp4#t=690s

- Non DLC evidence of Reapers effecting dreams.