Hi David,
We will be targeting C++11, but not all of our supported compilers have a C++11 standard library yet.
In practice that means we are currently targeting C++98 (functionally equivalent to C++03), and intend to turn on some useful C++11 features over time.
We don’t support the use of exceptions (because of the need to allocate memory from an exception context), which means you have to be careful when using some common C++ patterns.