Season 5 will contain 12 episodes, and will debut in Summer 2012.
Michael Lombardo, president of HBO programming, made the announcement and added that he is "thrilled that TRUE BLOOD continues to enjoy a phenomenal reception from both subscribers and critics. Alan Ball and his gifted team have devised the greatest thrill ride on TV."
Alan Ball also commented, saying "I remain amazed and delighted by the enthusiasm of our viewers. I can't imagine having more fun than this."
"True Blood" airs Sundays at 9 p.m. on HBO..