ECMAScript Harmony is the code name for proposals aiming to extend the current ECMA-262 specification.
ECMAScript Harmony is the code name for proposals aiming to extend the current ECMA-262 specification and to form the new ecmascript-6. It names the agreed design trajectory of post-ES5 editions. It will include syntactic extensions, but the changes will be more modest than ECMAScript 4 in both semantic and syntactic innovation.
Packages, namespaces, and early binding from ECMAScript 4 are no longer included for planned releases, and don't live under the roof of Harmony.