I thought the explosion at Jane's was of his own doing, but this promo says otherwise. So, doesn't that perpetuate the Brett Partridge theories? If Red John really bombed that house, wouldn't it be completely irrational of him to actually show up for the meeting and risk blowing himself up? If he were one of the five suspects, wouldn't it have made far more sense to simply wait it out until everyone but him entered the house, and then activate the explosion? Sure, the CBI team would automatically suspect him for being the only one who didn't show up, but still, isn't that better than going in there and probably getting killed by his own device? 

The only way this makes sense for Red John is if he's Brett Partridge. He 'died' so he has a pretty solid alibi. This would also explain why Partridge had to die so soon, he got himself off the radar and was free to carry out his plans. Of course, the faking of a death is a cheap plot point and I didn't want it to happen, but I think Partridge is now the likeliest candidate. This show is not above such a trick.

The only other guy who is on the deceased list is Kirkland, and we know he was actually hunting RJ so he's not an option.

Regarding the promo, when the voice says it's down to the final three suspects, it shows the tattooed ones, but again this conflicts with their reasoning to enter the house.
As for those whose photos are pinned up on the board, I believe they are at large. There would be no point having them up there if they were confirmed dead, as that puts them out of the picture. Also, there is no photo of Partridge there.

Lets hope we learn Red John's identity in the next episode, it's been long overdue.

Sorry for the long post. But I believe this is how it's going to go down.

Patrick Jane is going to play the final game in the press conference in 'The Great Red Dragon'. The spoilers state that he and Lisbon will reveal the name of 'Red John'. Lisbon will believe this name is true.

Patrick is however setting up the final showdown, making sure the media, ALL law enforcement and his own team are sent on a chase after Betram or Smith (whichever one he reveals as his 'false' Red John in the press conference). This allows Jane the space, time and opportunity to draw the real Red John into the open: ending in Red John's death in a park - eventually.

Whilst lot's of excitement will be created as the police and media go beserk and hunt for 'Red John' (Bertram or Smith - whichever name Jane feeds them....), the real Red John will be drawn out in a desperate act to contact Jane - simply to tell him 'he has the wrong guy'. We know Jane has fooled Red John once (the drinking and breakdown), he can and WILL do it again by giving the false name 'very convincingly'. The real Red John, (even though he tried to kill Jane with the bomb...) won't be able to resist contacting Jane about some other 'person' getting credit for his work.
We know there is nothing Red John hates more. And if he is made to believe that Jane REALLY believes Bertram or Smith IS Red John - well, he will risk it all to show Jane otherwise.

By now, Red John has nothing to lose, neither does Jane. His attempt to kill Jane failed, and he's now planning his 'escape' into society and normality. The ONLY thing that will draw him out to Jane is when his ego won't allow him to accept that his friend/foe Jane is crediting someone else as Red John. And Jane: KNOWS THIS.

Jane knows Red John (the real one....) will only come out in those circumstances. His ego will take over and force him to reach out to Jane.

The scene with the final 5 suspects and the tattoo hocus pocus - for Jane it's been nothing more than an elaborate and convincing plan to 'give someone else credit for being Red John', making the real Red John believe this and thereby forcing his ego to expose himself, finally.

Enter Bob Kirkland once more. His hair has now been dyed (red probably) - ok, wild guessing here, but it sounds fitting.

Final showdown. Fight to the death.

Why are people so sure that Bret Stiles personally knows Red John?
He even said once that "Red John sounds like a perfectly unpleasant sort of fellow" and if he could help Patrick get closer to him, he would.
So I don't understand why some people are a 100% sure he knows him personally. It's not a fact.

Simple deductionA. Bruno Heller said that we can trust the list. It has several time been confirmed that Red John is one of the seven suspects.
B. Bret Stiles, who personally knows Red John, was genuinely surprised by Patrick's accusation.

Conclusion: (A+B=) Either Kirkland or Partridge is still alive and is Red John!