Here is the info regarding airlines do and dontīs.

Swedish: http://www.sas.se/upload/Sweden/Help...ativ261_SE.pdf

English
http://www.scandinavian.net/12372/No...ger_Eng_a4.pdf

According to this the airline does not have to do much if the scedulechange/Cancellation is made at least 14 days before departure. See the square in the text:

This compensation does not apply at all if:
we can prove that the cancellation is caused by extraordinary circumstances, which could not have been avoided even if all reasonable measures had been taken.

Such circumstances may, in particular, occur in cases of political instability, meteorological conditions incompatible with the operation of the flight concerned, security risks, unexpected flight safety shortcomings and strikes that affect the operation of an operating air carrier and impact of an air traffic management decision;

or you are informed of the cancellation at least two weeks before
the scheduled time of departure

or you are informed of the cancellation between two weeks and seven days before the scheduled time of departure and are offered re-routing, allowing you to depart no more than two hours before the scheduled time of departure and to reach your final destination less than four hours after the scheduled time of arrival;

or you are informed of the cancellation less than seven days before the scheduled time of departure and are offered re-routing, allowing you to depart no more than one hour before the scheduled time of departure and to reach your final destination less than two hours after the scheduled time of arrival.