From the moment the curtain closed on the latest adaptation of “To Kill a Mockingbird,” John Ekeberg knew it was something special. “The language in this script is so immediate and powerful,” said Ekeberg, executive director for the Broadway and Cabaret divisions at Denver Center for the Performing Arts. “I was sitting there in (New York City’s) Shubert Theatre and marveling at the resonance of the characters and the topics they covered.” Similarly, when Ekeberg heard about the first national tour of this new version — written by Aaron Sorkin (“The West Wing,” “The Social Network”), produced by Scott Rudin and directed by Bartlett Sher – he immediately called the booking agent to see if he could share it with Denver audiences. The result is a July 13-Aug.