World preems by Amy Herzog (“After the Revolution”) and Will Eno, who penned “Middletown” and “Thom Paine (based on nothing),” will top the menu of six shows at Yale Repertory Theater’s 2011-12 season.Anne Kaufman directs “Belleville,” a contemporary story centering on an ex-pat couple living in France. Show opens the season Oct. 21. Eno’s play, “The Realistic Joneses,” which centers on two suburban couples with the same last name, starts perfs April 20, directed by Sam Gold. Also on tap for the New Haven company is Sarah Ruhl’s adaptation of Anton Chekhov’s “Three Sisters,” directed by Les Waters. Show is a co-production with Berkeley Rep, where the production bows next month. Additional offerings include an adaptation of Moliere’s “A Doctor in Spite of Himself,” by Christopher Bayes and Steven Epp and helmed by Bayes, and Shakespeare’s “A Winter’s Tale,” staged by Liz Diamond, A third to-be-named world premiere is also on in the works.