I'm wondering what the current status of the C++11 support in RIOT is? Is
there a matrix like overview  available? I'm particularly interested in
std::shared_ptr and std::thread support in RIOT. I would also be happy if
somebody could share his/her thoughts on implementing C++11 features for a
libstdc++/libc++ for RIOT.
the features that simply depend on the compiler, such as auto or lambdas, do work with a suitable compiler, e.g. the gcc-none-eabi from launchpad . The header only part of chrono does work too. As Martin mentioned I am working on thread, mutex and condition variable. My current implementation is base on the RIOT threads and co. It does not support the full API, but you can find all necessary file here  with a small example.