With U.S. regional theaters nailing down their 2011-12 seasons, world preems on the upcoming slates include plays by Bill Cain, Dael Orlandersmith and Lisa Loomer, as well a new docu-fiction-tuner hybrid from the Civilians and a solo autobio starring Rita Moreno.

The latest by Cain, whose play “Equivocation” was popular regionally and played Off Broadway, bows caregiver drama “How to Write a New Book for the Bible” at the Bay Area’s Berkeley Repertory Theater in October ahead of a stint later in the season at Seattle Repertory Theater.

Latest from Orlandersmith (“Yellowman”), solo show “Black n Blue Boys,” also preems at Berekeley Rep, as does “Rita Moreno: Life Without Makeup,” a song-and-story bio outing that bows in September.

Denver Center Theater has lined up the latest by Loomer, whose plays “Distracted” and “Living Out” have both seen Gotham stints. “Two Things You Don’t Talk About at Dinner,” about a tumultuous multicultural Seder gathering, begins its run in January.

At Kansas City Rep, the new show from the docu-theater collective the Civilians, “The Great Immensity,” opens in February. Troupe (“Gone Missing,” “This Beautiful City”) investigates climate change in a musical that combines fiction with material drawn from interviews.

Also making the rounds of regionals is a new play by Theresa Rebeck, “What We’re Up Against,” which had its first production at San Fran’s Magic Theater earlier this spring but continues its “rolling world premiere” next season at Chicago’s Victory Gardens and at Houston’s Alley Theater. Alley also hosts the preem of Elizabeth Egloff’s “Ether Dome,” about the man who discovered ether’s use as anesthesia.