A Colorado group called Notes Live planning a 12,000 seat amphitheater in far west OKC near Mustang in the Mustang Creek Crossing development.
From their website:
"The Sunset Amphitheater at Mustang Creek will be a state-of-the-art outdoor amphitheater located in Oklahoma City, with a total capacity of 12,000, comprised of 120 eight-person VIP fire pit suites available for lifetime purchase, 12 super suites, lower and upper bowl fixed seating, and a general admission lawn. Each fire pit suite will feature a natural gas-powered fire pit and fully configurable seats with abundant room for food and beverages, to make for an exceptional and private environment to take in a show. The amenity-rich fire pit suites offer incredible views of the stage. To elevate the experience even further, they will include high-touch service for food and beverage before and during the show. The Sunset Amphitheater at Mustang Creek will be the most luxurious and hospitality focused music venue in Oklahoma City."