Apparently Blizzard is going after developers making iPhone apps for World of Warcraft (free and otherwise) by giving them cease-and-desist orders. As Mike Schramm says 'Blizzard may be planning to do more with the iPhone,' but 'It would be a real shame if Blizzard legal was simply going after fans who have invested a lot of time and effort into these apps even when there's no clear reason for them to do so.'"
It's interesting that they're doing so around the same time a video for a (rumored, alleged, unconfirmed — take your pick) iPhone client for World of Warcraft has been floating around.