Join Date: Jun 2006
Location: LAX/BOS/HKG/AMS/SFO...hmm, I need a life.
Programs: United1K, AA ExPlAAt, DL MM/Gold, Hilton Diamond, Avis First
Posts: 13,316
This is not a bug it is a perk. Beginning 8/8/2011 Delta announced that Diamond members and their guests (up to 4) may randomly change the departure gate status of up to 3 aircraft per hour. Platinum Sky mile elites who have the AMEX Platinum Reserve card may also take part in the fun.
Keep Climbing.