fx_logo_150FX is taking a jump on fall season, rolling out its fall premieres in the two weeks before the broadcast networks unleash their new/returning series. Biker drama Sons of Anarchy returns for Season 3 on Tuesday, Sept. 7, at 10 PM, while new PI comedic drama Terriers, from Ted Griffin and Shawn Ryan, will make its debut the following night, Sept. 8, at 10 PM. I’m curious to see how a lighter procedural, a genre that is so hot in cable via USA and now TNT and A&E, will do on FX, probably the grittiest basic cable brand in the hourlong arena. As for comedies, Season 6 of the channel’s veteran It’s Always Sunny in Philadelphia premieres Thursday, Sept. 16, at 10 PM, followed by the second season debut of The League at 10:30 PM.