The KDE community is working to improve Rust support in KDE as part of the KDE Goals initiative. We are implementing Rust bindings in KDE and improving support to build third party apps beyond C++.
This Sunday, Oct 20th at 18:00 (UTC), the KDE Goals team will be answering your questions live. Post your questions here and I'll make sure they'll answer them.
Very exciting. Several times in the past I had felt the urge to write new or contribute to existing KDE software but ended up not doing that since it was C++-only.