Duke,
Hiring by KLM will not differ from what is stated on ppjn.com under the KLM factfile. Movement from type to type is strictly regulated by a bidding system based on seniority. If you were thinking of applying to KLM remember that they only consider applications from people who graduated from the KLM flight academy or who are ex-military from the dutch navy or airforce. On top of that you have to be fluent in verbal and written Dutch.
If you can tick those boxes: good luck applying, they still hire about 10-12 people per month. If not, don't bother.
Take care,
SJ