It isn't believed that a potential new season of True Detective would be premiering any time soon, but could HBO have just dropped a hint that the series won't be coming back at all?

During Sunday's season 6 premiere of Game of Thrones, the cable channel ran an ad detailing some of the programs and movies available on its streaming service, noting on the shows a key difference between ones that are currently still airing and ones that are finished up on the channel.

Shows like Silicon Valley and Veep were tagged as streaming "all episodes," while series which finished up already, like Boardwalk Empire and Rome were tagged as streaming the "whole series." Similarly, True Detective was tagged as "whole series," which has some wondering if the show was secretly canceled and this was HBO's way of letting fans know.

However, according to True Detective Rumors, fans shouldn't get too worried about the show's fate yet. Though there is still nothing that is suggesting the show's actual return anytime soon, the fact that the footage used in the ad was only from the heavily discredited second season can be seen as a good sign.

According to the site, because the show is an anthology series, HBO may be considering season two as being its own series, and if HBO was trying to say the series was really over, they would have also included footage from the heavily applauded first season. Though there is still no word of an official renewal, the ad doesn't suggest a third season has been canceled and is no longer in production at HBO.

The show's first season, which aired in 2014, starred Matthew McConaughey and Woody Harrelson. Following that success, a second season was ordered, and aired in 2015. That season starred Colin Farrell, Vince Vaughn, Rachel McAdams and Taylor Kitsch. It wasn't received particularly well by either critics or fans.