Update: It's happening. Netflix has made it official.
Netflix's most recent foray into original programming, Hemlock Grove, may not have debuted to the rave reviews of its predecessor, House of Cards, but it did outperform it in its early days. More people watched Hemlock Grove in the first two days of availability, as Netflix CEO Reed Hastings said during a recent company conference call.
Despite the lack of critical acclaim, people seem to like the show. This is usually how the horror genre works. And in the genre, when people want more, they usually get it. See franchises like Paranormal Activity and Saw (or more historically, Friday the 13th, Halloween, Texas Chainsaw Massacre, A Nightmare on Elm St., etc.).
Netflix has not announced plans for a second season yet, but it's hard to imagine the company killing one of the early cornerstones of its original programming experiment if it's getting the viewers. But viewers aren't just watching the show. They're already anticipating more. Yes, already (it did just come out less than a month ago). This is no doubt a side effect of releasing an entire season's worth of episodes at the same time.
Nevertheless, as Yahoo reports, there is a high volume of people searching for the release date of the second season, despite no announcement that it will even happen.
— Yahoo! Search Data (@YahooSearchData) May 15, 2013
The involvement of Eli Roth (one of the show's producers, who also directed the pilot) was, without a doubt, a huge part of the interest the show generated ahead of its release, but t's hard to say how much he would be involved with a second season. He clearly has a lot on his plate (and some of us are still hoping he can find time to make "Thanksgiving"). Still, there's no apparent reason that Netflix wouldn't push forward with a new season with or without him.
There shouldn't be a lack of material, based on reports of Brian McGreevy's work on sequels to the novel upon which the show is based. Shock Til You Drop reported in April of last year:
McGreevy has a second Hemlock Grove novel nearing completion, with a third fully outlined, so expect at least two more seasons should the series find a following.