Proper C++ IDE for linux would be awesome!
Its existing C++ smarts are extremely impressive already; the developers are mostly considering libclang to get out of having to maintain their own C++ implementation as time goes on and the language gains more features.
Before anyone feels the need to praise Emacs here: It's been my primary C++ development environment for nearly 15 years. It does it alright, but it's not integrated in the way an IDE is.