ADD boiling water to gelatin mix in medium bowl; stir 2 min. until completely dissolved. Stir in cold water. Pour into 13x9-inch pan. Refrigerate 3 hours or until firm. Cut into 1/2-inch cubes.
BEAT pudding mixes, cinnamon and milk in large bowl with whisk 2 min. Let stand 5 min. or until thickened. Stir in COOL WHIP.
REMOVE 1 cup gelatin cubes; set aside. Layer half each of the remaining gelatin cubes, cake cubes, oranges and pudding in 3-qt. serving bowl. Repeat layers; top with reserved gelatin cubes. Refrigerate 1 hour.