Bruno Heller confirmed that the meeting between Bertram smith and Mcallister has nothing to do with red john and it's related to the plot after the red john chapter ends which is related to law corruption and the two new regulars will have an important role to play in it. http://www.spoilersguide.com/the-mentalist/spoilers-what-you-should-know-about-bertram-mccallister-and-smiths-meeting/