User blog comment:Bronzey/Details of apparent next ME2 DLC pack - "Arrival"/@comment-1221773-20110304233036

Apparently, copies of Dragon Age II come with an insert hinting at Arrival. It doesn't provide a release date or any new info, but it's the first official sign that Arrival is indeed on the horizon.

http://www.escapistmagazine.com/news/view/108217-Arrival-Pops-Up-in-Dragon-Age-2-Unboxing