With MSN141 finally rolled out, we could potentially see all pre-MSN200 frames been delivered/fly out of TLS, by year end.
Do you talk about Qatar frames only?
The Hainan frames I think, are a bigger worry and one would like to see the "delivered" MSN52 and 55 to fly out one day. Furthermore there are the unsold test frames MSN2, 4, and sold but not delivered MSN65 and 71.
spotted unpainted on the Flight Line (waiting for painting)