Some news starting to come from the IAG Capital Markets Day...
International Airlines Group PLC shares lower after profit downgrade
From other sources there will be a push to fit extra seats to many of the fleets - a number of 777s will be fitted with 10 abreast in Traveller and A320 seats increased to 180.
The number of A319 machines will be reduced but overall fleet size remains around 300 so these would need replacing?