Do you guys remember when at season 4 finale, the guy who obviously knew red john and was shot by Jane said to him "Let go, let go, are you going to live like this all your life? trying to catch red john?"

well, i am pretty sure that the fact that he said that, means something, red john is ready to be revealed.

I am not saying that she is Teresa, but she was the one seeing him say "im tired, im done with this, this is it,"