Get a sense of humour. They've skipped April Fools before and that's because they couldn't find the time to do it. The Draenei model thing would have taken a modeller an hour or two at best to create (obviously they had the base model done beforehand), so the time investment would have been extremely minimal and not a waste of precious man hours for the development of the expansion.
They are obviously working as well, so no need to be negative over absolutely nothing. That kind of behaviour is just sad, to say the least.