Everyone calm down.

Red John isn't necessarily dead. Not only was McAllister's personality and persona all wrong, but there WAS a serious clue at the scene of Partridges death. 

I'll let people clue it together. Why did Jane use a pigeon? Then add apply your answer to the one defining feature of the house Partridge was in.

Of course, if the show's ratings boost back up on this new type story, the writers will just throw that open end away and he will be dead.

And don't tell me you watch for Red John. He's just a bonus. We all watch for the fantastic character that is Jane and his interactions with any and all the other characters.