From the Heyne Verlag Facebook page:
A thank you from Stephen King:
The visit by Stephen King in Germany and France, last November, was a great experience not only for his fans but also for himself. As a thank you for the warm welcome he has come up with something special. Stephen King has written for his German and French fans a story only in German and French, which will be available as an eBook on March 14 2014. As a teaser, we would like to show you the cover of “Böser kleiner Junge (Bad Little Boy)” already:
