Dear lomapaseo-san
Pure speculation but since NTSB is assisting the Japanese Investigation Authorities, no suprise if they tipped about the findings in the past as part of their "assistance". Based on the fact that Japanese Investigation Authority's inexperience in investigating crash of a particular aircraft type, it wouldn't surpise me if this "tip and assistance" would have seemed somewhat tempting to them and effected the course of investigation somehow.
I hope the report doesn't turn out be copy&paste of the Newark crash report
Fingers crossed.