Well, it;s obviously that each of the first 7 episodes aims to turn our attention towards one of the 7 suspects. The 1st - Brett Partridge, 2nd - Haffner, 3rd- Tom Mcalistair, 4th - Kirkland (see the next promo), etc. , so that in the 8th we'll find out who RJ is (I hope).
Now, it will be very interesting if Partridge will be the only dead-one of the 7 suspects, at the end of episode 7. Because that means Bruno Heller wanted from the beginning of season 6 to exclude Brett from our theories (he knows that most people suspect  him). Heller just wants that we forget about Partridge (he's dead, he's out of the list) - and so it is I see.. :)) Now, most of the last theories are about Haffner, Tom, next week will be about Kirkland, and then Stiles or Reede, bla bla.
Heller truly wants to mislead us, all the time, that's my opinion. He said in an interview that we'll be disappointed when we'll find out who is RJ. Well, actually , people wouldn't be disappointed if Brett Partridge is Red John, but the contrary.  I believe he only wants to make us thinking to a suspect which can really disappoint us (maybe Reede, or Tom or even Patrick). He is playing with us, and he tells us in his interviews only what he wants us to believe.
I still think Brett is Red John and I agree with the theories of the Revelation, 666 number and the dragon with the seven heads ... u've read about...