From April 2012:
Stavanger - 3 weekly (new)
London-Luton - goes from 21 weekly to 24 weekly
Brussels-Charleoi - goes from 5 weekly to daily
Stockholn-Skavsta - goes from 5 weekly to daily
Rome-Fiumicino - goes from 5 weekly to daily
Milan-Bergamo - goes from 2 weekly to 4 weekly (from November)
This is the complete list with additional frequencies for Warsaw:
Destination
Stavanger - from 0 to 3 weekly flights
London Luton - from 21 to 25 weekly flights
Brussels Charleroi - from 5 to 7 weekly flights
Gothenburg - from 2 to 3 weekly flights
Stockholm Skavsta - from 5 to 76 weekly flights
Milan Bergamo from - 2 to 4 weekly flights
Oslo Sandefjord Torp - from 3 to 5 weekly flights
Rome Fiumicino - from 5 to 7 weekly flights
Barcelona - from 2 to 3 weekly flights
Eindhoven - from 2 to 3 weekly flights
All as of April 2012