I'm going to be continuing to spend more time on learning R, (re) learning Python, and learning some more parts of the Python ecosystem like Numpy, Scipy, Pandas, Scikit-learn, etc. I'm also planning to spend some time on Prolog. And if there's time left over, I want to at least dabble in Scala a bit more and learn to use Figaro.
Really excited about learning Elixir+Phoenix, possibly React too.