Many thanks to Karin H and betty for the heads up on this news!
GIGA FILM will be sponsoring a preview screening of John Wick on January 16 at 19:00 hr. You need to enter their contest for the chance to win tickets to the event. If you scroll down to the very bottom of the article, just above the comments, you will see the instructions on how to enter. For German readers who are interested, he article is here.
Note: It sounds like they will be giving away 5 pairs of tickets. There will be no tickets on sale via betty
Update: Many thanks to betty for the following info that she left in comments:
The Directors Chad Stahelski and David Leitch and the Band Kaleids who provided a song to the soudtrack will be present. It is a special screening for special guests. The event will be documented for TV and online media. The location is a vintage garage and no cinema. The location can be actually rented for parties and other events. It looks like it replaces a press junket and premiere tour.