To think some of us (yes, including myself) were hoping for new gameplay footage and/or beta screens... Don't get me wrong, it's great artwork but as others have said, it's nothing new.
I also feel that Blizzard offered some great pieces along the way as they used FB as a cheap marketing tool, but this milestone update is certainly a letdown. This is especially so considering that D3 is their first and only unreleased game to do it - that's gotta count for something right?
Oh well...I can't say I wasn't thrilled with the recent runestone update at least, things like that keep the morale up. Still, even some crappy quality, random over-the-shoulder footage of the internal beta would've sated my hunger quite nicely.