Go Lang - Go tries to reduce the mental overhead that it places on developers. With focused vocabulary, dead simple scoping rules, first-class functions, etc. the language is just so nice to code with. It lacks some features, but I think with time, they will be implemented and the language will become way more used.
Elm - I've always been interested in functional programming, front-end and web technologies. Elm gives me all at my disposal.
Scala - this is totally on my near-future radar. It's a multi-paradigm language build on top of JVM, a mature enough environment. The language also provides a soft transition to functional programming.