Keywords totally new to C++11 (see here):

• alignas
• alignof
• char16_t
• char32_t
• constexpr
• decltype
• noexcept
• nullptr
• static_assert
• thread_local

Previous keywords that have had their meanings changed in C++11:

• auto (now interpreted as auto specifier)
• class (adds declaration of scoped enumeration type)
• default (adds support for generating default special member functions, “= default”)
• delete (adds support for deleted functions, “= delete”)
• export (unused and reserved as of C++11)
• extern (now applies to thread storage duration)
• inline (now applies to inline namespaces)
• mutable (now applies to lambda expressions)
• sizeof (adds sizeof... for parameter packs]])
• struct (adds support for scoped enumeration declaration)
• using (adds support for type alias and alias template declaration)

Not new “keywords” but have special meaning in a particular context:

• final
• override