According to Tjibbe Joustra, chairman of the DSB, the story about AIVD (dutch intelligence) not cooperating with the DSB is a hoax. See his reply here:
'AIVD werkt onderzoek naar MH17 tegen' - AD.nl
He also said that the DSB has a wish list of components still needed to be recovered. On a TV interview he stated that the collection of debris of last november was a 'grab what you can' effort, and that the top of the forward fuselage is still in Ukraine, in the northern debris area that has not yet been searched. A wish-list has been sent to Ukraine and now fighting has been calmed in that area, it is likely that some new shipments of MH-17 parts will go to the Netherlands.
It will take until the end of the year before reconstruction is complete, so I guess that the final report of the DSB will not be ready before 2016.