Technically DTHs themselves Will no longer be supported in a few months. Instead, Z wave devices will use “edge drivers“ which is a whole different platform using a different language (Lua instead of Groovy). The good news is that then everything will run locally. The bad news is that everything is still in beta and right now there isn’t yet full support for multi endpoint devices. For example, you can’t use them with the voice assistants, they only see the main component, not the individual ones.
If you’re interested in that, check out the following:
And you can find links to the edge drivers that have already been written by community members in the community – created wiki,