This is not new news, head of the Bank of Japan Kuroda has already said they would not hesitate to adjust policy if downside risks from sales tax hike increase (August 20)
I posted earlier on when we can expect the decision to be made.
And as a ps. The Bank of Japan begins its two-day policy meeting today, with an announcement expected sometime after 0300GMT on Thursday (tomorrow).
There are no expectations in the market for any policy change from this meeting.
USD/JPY is asleep, 99.57/60.