I just think the likelihood of the source being in this format is extremely low and when coupled with the timing of this article it's all but certain that this is a marketing piece.
Looking at the reddit user that found this disc... He was looking for a job at a "big name" tech employer a few months back, and he's definitely into gaming. He mentioned that blizzard told him the disc was stolen, which would be slightly more believable if returning it prompted an investigation rather than showering him with gifts.
