Red John's case is closed. I do not think the producers would promote a new plot, a new beginning on TV if this case were not already closed. A "new beginning" was a desperate measure to hold the audience who was already bored. I believe that Bruno Heller would like to continue and reveal Red John only on a serie finale, but certainly, he were pressed because this plot already took a long time. Well, the season finale is coming and I really wish I was wrong! This series deserved much more!