Heaven doesn't so much wait for as it waits on Dean Winchester.

The husband and I have watched through the first episode of season 5. What I thought I knew:

• Lucifer shows up at the end of season 4 and is played by Jacob from Lost
• Bobby becomes paralyzed
• Dean is very important in the grand scheme of good and evil (Based on recently being spoiled again, I'm amending this one to: Dean is the human embodiment of the Archangel Michael...and after some thought on the subject, I'm amending it to Dean at some point being the vessel for the Archangel Michael)

And in actuality:

• Lucifer shows up at the beginning of season 5 and enters a vessel played by Jacob from Lost
• Bobby becomes paralyzed either due to stabbing himself with Ruby's knife so that the demon possessing him wouldn't kill Dean, or because the angel Zachariah is a dick
• Dean is the Sword of Michael, meaning he would be Michael's vessel if he would ever accept being so (this is not a euphemism)
  

Unrelated to what I did or did not know in advance: Ruby's dead! Castiel is not! Yay!