yes they all die
Yes
yes
I sure hope not.
No, Castiel from Supernatural does not have a son.
The last music of the episode is Scorpions- No One Like You
there saying that there is going to be a 5th season but the last season is the 6th one
Yes because there has to be
Septemeber 2009, last season.
No he is not coming back to supernatural in season 7, but I think he is coming back in season 8 maybe.
Yes, season 8 premiered Oct 3rd, 2012
never
The 4th season of Supernatural premiers Thursday, September 18th at 9/8 central.