I have mentioned the same in my earlier post- It does not remain a prediction.....If the predictions are subject to change then the passenger can get a final idea only on his Date Of Journey.....Predictions will be changed n number of times.....And there are plenty of PNR's which are really very difficult to confirm, even till the last moment we are not sure what will the final outcome be, so in such cases it would be a nightmare for the passengers with tricky PNR's