Focus on new versions

I was thrilled to see that the development of version 5.1.0 has made great progress in the last few days. My biggest compliments to everyone involved!

However, I still see an entry in the roadmap for the next level of version 4... a version whose core drivers (Ruby, etc.) are already EOL.
In my opinion, it would be good for the project to get rid of this version as quickly as possible and focus on version 5.x...