If that's more than you think you can handle, I have even more news for those of you who enjoy shirts:
Jackson and Doc showed this trailer as part of their panel at NYCC recently and it's finally been released in all its glory:
Season six starts early next year! For real!
Also after you watch the episode, Adult Swim has put up a five minute epilogue that also contains a brief glimpse of season six. Again, watch the episode before you watch the epilogue, but you should totally watch the epilogue.