I don't know who Red John is.

My theory, Red John hasn't showed up the "meeting" that made by Jane.
Why he risk his own life by the bomb?

Inoticed something. Daniel Cerone and another writer said RJ is one of the list, but they did not tell that RJ is remaining of the suspects. This is interesting.

Maybe Red John is Partridge or Kirkland? I don't know, but it easily happens.