The HPX library makes heavy use of a range of C++11 features such as move constructors and is also aiming to be a complete implementation of N4409 (Working Draft, Technical Specification for C++ Extensions for Parallelism).
They have a list of publications on their site which includes a number of example of using the library to speed up scientific computation. There is also so interesting discussion of the library and it's use of modern C++ in this CppCast episode.