FX has renewed "American Horror Story" for a fourth season. The next 13 episode season is set to debut in 2014.
The current third season run, "American Horror Story: Coven," has been the most successful yet for the network and is averaging more than 7.7 million viewers an episode. Another nine episodes remain to air with the finale set to screen on January 29th.
Jessica Lange is confirmed to be returning for the fourth season, previously indicating it will likely be her last. the show's co-creator Ryan Murphy however has said he'd love to have her back for more if she's interested.
Source: The Huffington Post