HBO has released a teaser trailer for the upcoming fourth season for the horror-sexy drama “True Blood.” There isn’t much to this (CG text is just never all that amazing), but it ought to get fan fans excited for the new season.

Premiering in the summer of 2011, the fourth season of “True Blood” will have 12 episodes. The season is loosely based on the fourth novel in The Southern Vampire Mysteries series, Dead to the World. Creator Alan Ball has confirmed that similar to the novel, witches will play a large role in the fourth season.

Expect more teaser from here up until the season four premiere.