This seems to be more of a rigorous study than some pseudo-scientist claiming that the next big one will happen next month to increase sales of Japan's weekly magazines.
Apparantly the earth's rotation is about to slow fractionally, which tends to increase the number of worldwide large earthquakes.
May be worth checking the best before dates on emergency supplies and getting some in if you don't already have some. Upsurge in big earthquakes predicted for 2018 as Earth rotation slows | World news | The Guardian
I wonder what's happened to our resident earthquake specialist @rahul bhatnagar, he hasn't provided any predictions since 2010:Predicting Earthquakes | Japan Forum