The usual decreases for Ramadan although some are permanent such as Dublin - I thought the 380 was going to start or is this in preparation with both flights going three class with the next step the 380 on the lunchtime flight?
2 class started on 1 Jan this year. A380 delayed until 2019, with Aer Lingus growth putting to much pressure on infrastructure apparently! Country manager strongly hinted at 3rd daily (possibly seasonal) would be next if revenues to grown despite QR starting and CX next year at an event a few weeks ago.
First has always done rather good for them, the two class switch was more of increased Y demand on the evening service rather than not filling a good level of F seats.