Plenty of airlines have left Terminal 1 since the start of the summer, and the bulk of what's left are due to leave by the end of next week (26th October).
It seems there will be a very small number of flights remaining at T1 from 26-Oct-2014 onwards, namely:
British Airways - Amman, Baku, Beirut, Cairo, Hannover, Luxembourg, Lyon, Marseille, Rotterdam
El Al - Tel Aviv
Icelandair - Reykjavik
TAM - Sao Paulo
Yes, really very few flights per day.
Are there plans for retail units to largely close their doors given the reduced number of passengers and for much of T1 to be substantially boarded up on 27-Oct-2014, ready for the demolition crews ? Alternatively, will the terminal remain completely open, albeit with some deserted corridors, well into 2015 ?