This renewal is not surprising as Coven has outshined and shattered ratings records of both seasons one and two. There is no word on whether they will do, for the first time, a direct continuation of Coven's storyline or if they will follow suit and have another new theme with new characters.
Another possibility at this point is a continuation of season one (aka, Murder House). The way the season ended left it open for continuation and I was pretty surprised that season two (aka, Asylum) was a completely different thing with new characters and the same actors. With Dylan McDermott and Connie Britton expressing interest to return we might just revisit Murder House. I wouldn't rule it out.
