I completely disagree Swift VERY special. I'm a embedded systems programmer, and I most to use Swift. There is no other serious contender right now for a modern systems language than can replace C, C++ or objC.
Swift ia very unique language is that it:
1) Has the high level language syntactical goodness of a scripting language like Python or Ruby
2) Has the native performance of a systems language like C
3) Has strong support for multiple paradigms including Functional Programming, Object, and procedural
4) Can morph from a JIT language during compile time for faster programmer efficiency (Like Java), and compile fully native like C
5) Has a hot-coding environment like I've never seen anywhere else
There is only one language that come close to this, and that is Rust. But Rust is probably 5 years from being production ready. And it lacks the JIT-y hot coding goodness.