Unbound 1.9.2 released (june 17)

Could you please explain this with some (possibly a lot) more detail, benefits, configuration, example, …
I found this article, that explains it in general, what I want to know:

  • Do I need to use DNS-over-TLS, in order to use this, or can I use this with my current configuration?
  • Do you need to configure anything on the clients?
  • Will it work with all browsers?

Thanks for your time and effort.