World premieres by playwrights including Branden Jacobs-Jenkins, Rinne Groff and Sam Marks — plus a 10-minute offering from Sarah Ruhl — are among the shows rounding out the 2013 lineup of the Humana Festival of New American Plays.Slate is of particular interest to legiters as the first season to be curated by Les Waters, the new artistic director of Kentucky’s Actors Theater of Louisville, which produces the 37-year-old showcase of new work. Will Eno’s “Peer Gynt” redux, “Gnit,” was already announced for the Humana Fest as part of ATL’s subscription season of year-round programming. The fest also has set dates for its two annual industry weekends, which see pros from around the country descend of Louisville to check out the wares. First is skedded for March 29-31; the second, the slot most frequently attended by national press, is set for April 5-7. These works are on the 2013 Humana slate: • Jacobs-Jenkins’ “Appropriate,” about three siblings who discover a buried secret when they reunite to sell off their late patriarch’s estate. Gary Griffin (“The Color Purple”) directs the show, to be produced in association with Chicago’s Victory Gardens Theater. • “Sleep Rock Thy Brain,” a trio of one-acts by Groff, Lucas Hnath and Anne Washburn, conceived by Amy Attaway and Sarah Lunnie. The work, organized around the theme of the sleeping brain, is directed by Attaway and performed by ATL’s acting apprentice company. • Sam Marks’ “The Delling Shore,” following two novelists whose daughters get caught up in their fathers’ rivalry. ATL’s associate a.d. Meredith McDonough helms. • “Cry Old Kingdom,” a story set in 1960s Haiti and centered on a successful artist and the young wannabe emigrant whom he paints. Tom Dugdale directs the play by Jeff Augustin. • Mallery Avidon’s “O Guru Guru Guru, or Why I Don’t Want to Go to Yoga Class With You,” about an ashram-raised woman who attempts to explain her reasons for not wanting to go to yoga class. Lila Nuegebauer helms. • Ruhl’s “Two Conversations Overheard on Airplanes,” part of an annual slate of 10-minute mini-plays. Fest, which takes its name from longtime funder Humana Foundation, is set for Feb. 27-April 7.