The report of the Dutch Safety Board (DSB) was released today.
Here is a video presentation from the DSB explaining the main findings:
The findings are as expected by most serious investigators, with various scenarios as to who and why the BUK missile was fired still in play.
As pointed out on this site, Ukraine has legal liability for failing to completely close down the air space above the conflict zone in Eastern Ukraine, especially as the airspace was closed to military flights.
A parallel criminal investigation continues; although, given its make up, how thorough its report will be remains to be seen.