Not exactly. I am reminded of n3557. The ability to write a library like TBB is a positive. But much richer libraries are just barely over the ridge. std::thread is not much more interesting than the abstractions provided by Boost in the early 00's.
Part of the job of the library is to be boring. It's the reason third party libraries exist in the first place. They give you the basic starting points to get the job done.
Look how many people are complaining on here about how complicated c++ is. If something like tbb was integrated they would be all over it.
http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2013/n355...