With months to go until True Blood returns to HBO, more and more tidbits are spilling out about season four.

We already know that YouTube videos will actually be featured prominently on the series going forward, while Stephen Moyer has now teased a new presence in Bon Temps. He tells E! News:

"We've got a new presence. There will be a new kind of specter that represents darkness. We had the wonderful Denis O'Hare as the king of Mississippi last year and he's [gone] at the end of season three, so we've got something else coming in to replace that darkness, which is going to be really interesting, I think, this whole new sort of topic that we haven't covered."

What might this presence be? Submit your guesses in our True Blood forum!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.