Don’t miss DDI’s annual event where we share the latest news on what’s happening downtown and what it means for Durham’s future. Then, stay to network with partners, stakeholders and community members. Presenting sponsor: The Tower at Mutual Plaza   3:30 p.m. Doors Open   4 p.m. Program International Downtown Association’s Value of Downtown Study: How Downtown Durham Stacks Up State of Downtown Durham Report Then & Now • Capping Our 25th Anniversary Celebration   5 p.m. Networking Reception 'Under Construction' Tour of…