Known Ryanair increases/decreases versus S15 so far.
Decreases:
Tallinn, was 3 weekly now dropped
Shannon, was daily now 5 weekly
Total: -5 flights
Increases:
Barcelona, was 7 weekly now 14 weekly
Palma, was 12 weekly now 13 weekly
Alicante, was 12? Weekly now 14 weekly
Ibiza, was 4 weekly now 7 weekly
Dublin, was 35 weekly, now 42 weekly
Rome CIA, was 7 weekly now 9 weekly
Milan BGY was 7 weekly now 9 weekly
Bremen, was dropped, but re-instated at 2 weekly
Valencia, was 2 weekly now 3 weekly
Girona, was 2 weekly, now 3 weekly
Total: +27 flights
Not a bad start, and there will without doubt be more to come. I may have missed some decreases, however, so, feel free to add if I have.