Don't you find it interesting that Jane says to Lisbon, 'Now I have leverage'. Leverage? Interesting choice of words. Someone also mentioned two key things, one; Why would it take two episodes to catch Red John if, as seen in the promo, he has them all in a room with a shotgun pointed at them. And two; Would it not be a tacky ending to a highly sophisticated show if the reveal came in such a brutish manner?
I feel as if Jane knows something we don't, and he's using this situation just as he did with his breakdown, so authentic that Red John thinks he has pulled one over on him again.
It would be disappointing if what we have all waited for for six seasons comes down to, 'Is it you? Tell me or I'll shoot you'. And as proved in the Kirkland episode it'snot really his style.