This week I heard directly from a Delta Exec that there is going to be a level above DM based on revenue. This was part of a conversation about my roll over making it possible to not fly Delta for three years and maintaining DM status and how this diminishes program benefit for their best customers.
Some other notes.
Many Delta employees have read this thread can not comment because they aren't close to what the new program will look like yet, that any detail they offer could be changed. They regularly sketch program ideas as part of workgroups, some tame, some radical changes. It's not unusual or unique to Delta and doesn't indicate changes.
Lower Tiers will still be mileage based and RDM earned will be based on the same.
While GS and CK may offer different, but not necessarily better benefits for HVC than DM, Delta realizes that perception is reality and people like to be a part of something exclusive. This will allow them to attract more HVC.
New level will have upgrade priority over DM.