Still not tempting enough? But guise you can totally turn into a werewolf and show your affection for Team Jacob! When I say more creatures... I mean more. So many more creatures it will make you wonder "Man... What the fuck does Notch and his team do all this time?" There are ducks, boars, ogres, wolves, wraiths, bunnies, birds, horses, some gay pegasus thing. Not only did he add more creatures, but there is also the ability to saddle and ride the horses.
Of course don't expect it to be perfect. This is a lot of content that has not been tested on a wide scale until not too long ago. Good luck in those mines.