New Showrunner hired for Rizzoli & Isles, Jan Nash is replacing Janet Tamaro who left after season 4. Also, Lee Thompson Young's death will be handled in the first episode of season 5.
In the article below it states that Rizzoli & Isles is the #1 show for TNT, and it's second only to The Walking Dead for scripted series in the history of ad-supported cable television. Not bad, ladies. :)
Rizzoli & Isles News, Spoilers & Reviews: New Showrunner hired for Rizzoli & Isles