Collection of new and/or changed configuration items which are tested and introduced into the live environment together. [ ISO/IEC 20000 ]
Release [ ISO/IEC/IEEE 24765 ]: A software version that is made formally available to a wider community.
Release [ IEEE 829, ISO/IEC 12207 ]: Particular version of a configuration item that is made available for a specific purpose.
Release [ IEEE 829 ]: The formal notification and distribution of an approved version.