Screen Daily News is reporting that Nu Boyana, Bulgaria, is expanding its city street sets to accommodate not just the upcoming film Pope Joan, but also Sylvester Stallone's next directorial effort Rambo 5.

Does this mean that Rambo 5 is gearing up to shoot soon? The report doesn't give much more information than the fact that ten new sound stages will be built on the grounds of the Sofia-based studio for the film. Rumor has the plot of the next Rambo taking place off the war field. Some speculate that the story will deal with John discovering he has a daughter, and his fight to save her from an evil cult.

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At this time, Stallone hasn't announced a start date for Rambo 5.