Diablo III will be done whenever Blizzard wills it done, and the developer wants that to grow on gamers, literally. As part of its new community portal launch for Diablo III, Blizzard issues forth a manly challenge to gamers: to grow the manliest beard (or fabricate the manliest one in case beard-growing happens to be out of the question for whatever reason) they can think of and not shave it until Diablo III finally launches.
Some may choose to go the full distance, cultivating mighty mountain-man beards. Others may decide to trim theirs a bit to avoid the protestations of their loved ones. Whether it be braided, forked, or wild enough to house a family of squirrels, your beard will serve as a beacon of hope for humanity in the coming war against the Burning Hells.
Send in a mugshot of that lion's mane over to firstname.lastname@example.org, and Blizzard will post it on their new portal for all to gaze in awe and inspiration - and probably keep their minds off the fact that there's actually no release date announcement for Diablo III yet.