"Bank of Japan Gov. Kuroda shocks markets by adjusting the yield curve control program"

The headline in (non financial) press in Japan:

• BREAKING: Bank of Japan Gov. Haruhiko Kuroda shocks markets by adjusting the central bank’s yield curve control program and sparks a sharp rise in the yen.

As a counter, I've seen the headlines in the financial press saying Kuroda 'tweaked' policy.

I think the "shock" is a much better description. Markets had pretty much settled on waiting until Kuroda's term finished in April for any sort of change from the BOJ. Kuroda dumped on that today.