After the introduction of R a programming language a few years ago, its not S which makes it to the list of programming language but its D. It is considered to be faster and more advanced as compared to other languages.
Andrei Alexandrescu and Walter Bright, the developers of D say that D bridges the gap between C++ and other programming languages such as python by providing the performance of C++ and at the same time making it convenient for the users.
The social networking giant Facebook is considering on using D to code along side C++ and has already started its own programing language HACK. D is a compiled language.
Link to wired article on D: http://www.wired.com/2014/07/d-programming-language/?mbid=social_fb
Link to D webpage: http://dlang.org