Mine just got changed to received yesterday night. I sent my transcripts in on Dec. 23rd right as my last grade became available. Though I know many universities are slow and I was told it would take up to 7 business days to send out since they get so busy towards the end of the term. Depending on when you sent it out, I would try giving AADSAS a call sometime like Tuesday of next week.
...Be patient though, even once AADSAS receives it, it will take something like 2 weeks to update your GPA and at least another week or so to send out to the schools.