It's a huge change, guys.
I took the new tauren male out for a spin. You don't realize how big a change it is until you actually see it, play on it for a while. Everything about the new tauren model is exceptionally detailed and improved compared to the current in-game model. The feeling of weight, of the body under tension, it really is an amazing change all told. I'm really looking forward to seeing new models for races like humans and draenei. I've also played an orc female, and oh my word is that a subtle but still complete improvement.
This is one time I'll just close on my opinion - the new character models are a vast, vast improvement once you actually play on one. My word, what a difference.