The same thing happened to me. First it went to 9-6 to 9-20 then back to 8-18 to 8-19 then to 8-23 to 9-6. I've harassed T-Mobile through all means of communication (chat, T-Force, phone reps) lol and everyone keeps telling me that those who ordered in the first couple of days will get them on or before the 19th. Some told me that since the system showed the blue ones backordered for whoever orders them now, there's an error that changed EVERYONE'S ship date for the blues because the system is kind of wonky now.