Screenwriting duo Roberto Orci and Alex Kurtzman (Star Trek) said they turned in their draft of Cowboys & Aliens on Aug. 5 and are now awaiting feedback on their screenplay adaptation of Fred Van Lente's graphic novel.

"We literally handed it in yesterday," Kurtzman said in a group interview on Aug. 6 in Pasadena, Calif., where the duo were promoting their Fox TV show Fringe. "So ask us Monday."

Damon Lindelof co-wrote the script with Orci and Kurtzman. Orci added that they've done the best they could, and now it is in producers' and actors' hands.

"We'll find out, literally," Orci said during the interview. "We're waiting to hear from the principals. We try not to turn it in until we think it's ready. Obviously, there are always things you can improve."

The graphic novel deals with feuding frontier settlers and Native Americans in the Old West who team up to fight extraterrestrials. Orci and Kurtzman previously told SCI FI Wire that they put their own spin on the story. Now producers Brian Grazer, Ron Howard and Steven Spielberg, as well as potential star Robert Downey Jr., will get their say.

"We're just literally waiting to hear if they hate it or what," Orci said.

Cowboys & Aliens is tentatively slated for a 2011 release, with some sites reporting June 24 as the specific date.