Way to try sweep it under the rug by announcing it during all of Apple's product news. Classy act Zynga.
Or because the White House doesn't make important news announcements on Christmas Eve when nobody's paying attention...
I don't think this is a Zynga dick-move. I think this is a typical company move to bury a non-flattering story.
There are many things one might accurately criticize Zynga for, but this is not one of them. If they hadn't done it this way investors would have yet another reason to sell the stock, it would be evidence the company is run by idiots.