Given that Promo Awards have always previously been marketed as "50% off", let's definitely hope that this "tussen 25% en 50% besparen op de Award Miles die normaal nodig zijn voor award tickets" certainly is a once-off.
As they rightly acknowledge that Promo Awards are "een van de grootste voordelen van uw Flying Blue-deelname", it would be a shame if they reduce the savings from 50% to 25%.