By request, the Solas scene with a romanced Inquisitor Lavellan. I won't add to the spoiler other than saying it's Solas. (Which you know he's in this DLC because of the trailer.)
Inquisitor Lavellan Details: Active romance with Solas, Dalish elf, Mage, Atheist, Drank from the well.
Download my Inquisitor's save file for your own PC playthrough: http://www.ladyinsanity.com/blog/solavellan-saves-for-dragon-age-inquisition