It's been long since we've had an update about the official German translation of Season 9. Unfortunately there are no news about its continuation.
- As for now we don't have anything planned, unfortunately.
Their previous update was in 2014 when they tweeted that there weren't plans for more volumes to be released before 2015. The first and only volume (containing #0-5 and an exclusive variant cover) was released on July 8th, 2014.
More info about the translation here.