You can read the latest speculation in this FlyerTalk thread.
As it marches towards merging with NWA, Delta is considering the addition of segment qualification to its SkyMiles Medallion program. Currently, you can only qualify for SkyMiles Medallion status based on the number of Medallion Qualification Miles (MQM’s) you fly. This will be a good thing for short-haul Delta flyers such as myself.
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