I’ve installed memrise more than 3 years ago and during this time there were 0 new German courses.
I don’t think you’ll see additional German courses created by Memrise itself - it seems that they always only do 1-7 for the languages they cover.
However, there’s tons of community created courses. Assuming you’re looking for EN-DE, look here:
If you are looking for RU-DE, look here: