I Think Red John will be revealed probably to be Brett Partridge :
          Reasons are:
Heller's assessment of Brett partridge:

Brett Partridge (Jack Plotnick): "You've always got to be suspicious of the nerds," Heller cautions. "He's both a slightly embittered soul and a very intelligent person. Someone who feels they've been underestimated, underrated and mistreated by the world. Demographically, he's right there where a profiler would say, 'Yeah.'" As far as his career choice as a forensic investigator, "That's exactly the kind of job that a serial killer would want to take up. That's exactly the interests that a serial killer would have. [But] he always appears slightly weedy. Is he concealing strength or is he really that flaccid a person? It's hard to tell."

         Brett Stiles is maybe related to Brett Partridge in some way, which not only explains his Red John's connection to Visualize, but also explains why there are so many important people involved in covering up Red John's Trail.

         Bob Kirkland is secretly connected to both Red John and Brett Stiles through Visualize. Bob Kirkland also masterminded what will be eventually revealed to be the phony death of Lorelei Martins, and the information he collected on Jane is what allowed Red John to produce the tape that seemed to suggest a psychic prediction of Jane's suspect list prior to her death, when in fact that tape was made more recently.

        I accept the idea that "Brett Partridge is Red John",if Bruno Heller tells us the true side         of Partridge, I mean the mysterious side: intelligence, management and influence on           people.