Over the last few weeks, I have been monitoring fare fro ATL to HNL for 2018. A week or so ago, I noticed something weird going on with the seat map for DL837 (either not available or showing no available seats). This flight has previously been listed as an A330 who the lie flats. Today, I noticed that this flight is now listed as a 767-400 with lie flats and is being marketed as Delta One Service. Has anyone heard anything about these change or is this possibly a glitch?