c++11 to me was largely a quality of life improvement. Some other features that haven't been mentioned:
Non-static data member initialization - Being able to declare the default value of a member variable at declaration ( where it should have been ) instead of some constructor somewhere else. ( My personal favorite )
Delegating / Inheriting constructors - How many times have you had to write an init() because of multiple constructors.
constexpr - Kind of like a type safe macro's.