On OSM itself everything is up-to-date; the Autobahn section has been "opened" on OSM last December. Please check here: Link.
The German Navigator map is dated February 2020. 2 months after an OSM change I would also expect to find the update in the Navigator maps, but if I remember it correctly, 2 months are on the edge of the "update tolerancy" for Navigator maps, and probably we should simply wait for the German maps update.