I just found
this video, in which you can HEAR bits of the trailer! Except, not see them! If Freddie is the one who's yelling "I'm sorry, dad" in the clip, I'll have to be really concerned of what Astro will sound like.
If
I went to Comic-Con (that is, if I had money and lived 3000 miles closer) I'd have earnestly taped the whole trailer for the world's premature enjoyment.