I'm always dabbling in any number of things, but a couple I want to pay some specific attention to in the near future:
1. Prolog: this has been an ongoing interest for a while, but some things I've been diving into lately have led me back to focusing on logic programming again.
2. Go: because some projects (like ollama, etc) that I'm interested in possibly hacking on, are written in Go.
3. A lisp (whether that be Clojure, CL, Guile, whateve) - just because.