User thomar on reddit has a great breakdown of all the new stuff you can see from the trailer: http://www.reddit.com/r/Terraria/comments/1mh7uk/terraria_12_trailer_spoilers/cc97xfv
I'm so excited for this. Half a month!
http://i.imgur.com/YCSSmiq.gif

Yeah, there is a ton of new stuff here. More than I imagined, and it now makes sense why it took so long.
Not being greedy, just curious if we are getting more updates and how long they will keep that up before Terraria 2.
Holy crap, that looks great!
Yeah it does, it really does look like a new game.