I was examining the youtube videos and I couldn't get a real solid understanding of it. According to the RPGs they are supposed to be 5 feet to 6 feet tall, though currently it's hard to tell, but judging on the height of grass and trees next to them, it sort of looks like they are only around 3-4 feet tall, IE about the same height as Dwarves. (I have one friend who's throwing a fit because they aren't as tall as Taurens like they were in WC3)
Has there been any screenshots where a Pandaren was standing next to one of the currently existing races?