Public Hearing - Conduct a Public Hearing and Consider a Request to Establish a Planned Development Zoning District with a Base Zoning of Mixed Use and Adopt Development Regulations, Zoning Exhibit, Regulating Plan, Parks and Open Space Plan, Street Cross Sections, Street Diagram, Conceptual Driveway Layout, Development Tracts, Conceptual Landscape and Amenity Design, and Conceptual Imagery for Mixed-Use Tower for Approximately 55.957± Acres Located in the S. Jackson Survey, Abstract No. 489, Generally Located at the Southwestern Corner of the Intersection of State Highway 121 and Exchange Parkway; 8.926± Acres Located in the S. Jackson Survey, Abstract No. 489, Generally Located at the Southeastern Corner of the Intersection of State Highway 121; and 9.994± Acres Located in the S. Jackson Survey, Abstract No. 489, Generally Located Directly West of Bending Branch Way and Directly South of State Highway 121. [Gateway Allen at Twin Creeks - Mixed Use]