South by Southwest London, which runs June 1-6, will close with “Teenage Sex and Death at Camp Miasma,” ahead of its U.K. theatrical release on Aug. 21. Jane Schoenbrun’s film stars Emmy Award-winner Hannah Einbinder (“Hacks”) as a filmmaker set to remake a cult slasher film with the film’s original final girl, played by Gillian Anderson. Anna Bogutskaya, the festival’s screen programming chief, commented: “Jane Schoenbrun has been building one of the most fascinating bodies of work in cinema today. ‘Teenage Sex and Death at Camp Miasma’ builds on every touchpoint of Schoenbrun’s work, exploring horror, fandom, memory and identity, and pushes it further.” Five world premieres have been added to the program, including Bruno Safadi’s “The Playoffs,” produced by Brazil’s Globo and starring and created by major Brazilian actor Cauã Reymond, who will attend the festival.…