It’s a new “SNL” season, with faces both fresh and familiar. After a fanfare-filled 50th season celebrating the past, “Saturday Night Live” looks to the future with a cast that includes five new featured players. In his second “SNL” hosting gig, he’ll be joined by musical guest Doja Cat, making her debut in that role. All three were highlights of the 50th season celebrations, with Bad Bunny performing at the “SNL50: The Homecoming Concert ” and also serving as the final musical guest of the season. Carpenter, who was a major attraction of the anniversary celebrations, is pulling double duty as host and musical guest on Oct. 18.