Even if it is just a proof of concept implementation, I now added a WSUS server for windows support and integrated a special bintra client for it. So each and every update for at least windows 10 (german and english) is for now included in the database.
As the first import did make a big wave in form of data, we also passed the 6k number just in this moment.
Depending on the cost that windows server triggers it might get put to sleep after a while, but the technical layer is now there to check windows updates too.