According to Variety, Universal is moving ahead on its Tom Cruise pic, the sci-fi epic formerly titled “Oblivion” that’s now going by the working title “Horizons.” This weekend, a diverse who’s-who of Hollywood actresses will test for female leads in “Tron: Legacy” helmer Joseph Kosinski’s next project. Jessica Chastain, Olivia Wilde, Brit Marling, Noomi Rapace and Olga Kurylenko are among the thesps testing Saturday — though others are still under consideration. Universal had no comment on the shortlist. Cruise is set to star as Jack, a man who lives in the clouds above Earth and heads to its surface to repair drones that essentially keep the planet safe from an alien race that has all but wiped out humanity. There are two key female characters – Victoria, Jack’s right-hand woman and lover who serves as his eyes and ears while he’s on repair missions, and Julia, his fiancee on Earth before the alien invasion.