Apparently, the 767 refurb schedule was too lofty a task for Delta to complete by next spring. Our April Brussels flights are back on an older model 767 without the Premium Select cabin. Booked the flights through Expedia in PS, and Delta has now downgraded us into Comfort+. Not sure what my options are at this point - do I call Delta or Expedia, and what should I ask for? Is it best to wait it out and deal with this closer to departure in case they were to reassign the upgraded 767 on the route?