After a summer featuring a player dubbed the Meow-Meow, a showtune-loving talking clam, and a wisecracking android called the Zingbot, CBS has made the only possible decision regarding the future of summer reality franchise Big Brother: early renewal! Vulture has learned that the network will soon announce a thirteenth season for the unscripted staple, which this year has defied Nielsen gravity to post major year-to-year ratings increases — up 5 percent in overall viewership and 10 percent among adults under 35. “Big Brother is our summer hero,” CBS reality chief Jennifer Bresnan said. Brother, from exec producers Allison Grodner and Rich Meehan, wraps up its current season tonight at nine with a two-hour finale. Is it too late to hope for a last-minute hookup between the Zingbot and D.J. Roomba?