Many thanks to Atlantic who gave a link in the combox for Soda Pictures which is releasing Die Grosse Stille in English (UK?) cinemas from 29 December. As Liam Kelly comments, it is unclear just how widespread the "release" will be.
I'm not sure I like the look of some of the other pictures distributed by Soda Pictures. Say a prayer that Die Grosse Stille will lead to the conversion of some hearts at least.