In a large bowl, combine ice cream, orange juice concentrate and cinnamon. Cover and freeze for 2-3 hours or until firm. Meanwhile, combine berries and lemon juice in a saucepan; cover and cook over low heat for 10 minutes, stirring occasionally. Combine sugar and cornstarch; stir into pan. Bring to a boil over medium heat; boil for 2 minutes, stirring constantly. Remove from the heat. Cool; cover and refrigerate. To serve, spoon ice cream into a bowl or parfait glass; top with the berry sauce.