'True Blood' Season 6 shake-up: HBO replaces showrunner Mark Hudis with Brian Buckner

Some big changes are being made in the "True Blood"offices.

Mark Hudis, who was hired as a showrunner for Season 6 after series creator Alan Ball resigned to work on "Banshee," is now being ousted. The rest of the sixth season will be run by series vet Brian Buckner, a writer/producer who has been with "True Blood" since Season 1.

Hudis, who has a two-year deal with HBO, will still be developing under the HBO umbrella. "Mark Hudis has stepped down as showrunner of 'True Blood' to focus on development under his overall deal with the network," HBO confirms to THR, which first reported the news.

"True Blood" began filming Season 6 earlier this year. Though a premiere date has yet to be announced, the show will return with new episodes this summer.