It will be a boxed lunch. Not sure if there is a vegetarian boxed option (I believe there might be a vegetarian quinoa bowl option looking at some previous posts). DL started offering boxed meals on hub-to-hub FC flights between 900 - 1500 miles starting on 8/24 (they've been adding it to 1500+ mile FC flights since 7/28). Additional routes between will 900-1500 miles will be added on 8/31 and 9/14.