You can now implicitly cast lambdas to blocks, although they're otherwise completely separate (and must be - C++'s approach wouldn't easily translate to C).
Casting to a C++11 lambda doesn't really make any sense; each lambda function is a unique anonymous type. There's also no need to do any casting to use an Obj-C block anywhere that you can use a C++11 lambda, since they obviously already implement the Callable concept.
