It is intended for hardware system manufacturers and software developers of applications, operating systems, or tools. It contains specification changes, errata, specification clarifications, and documentation changes. Specification Changes are modifications to the current published specifications. These changes will be incorporated in the next release of the specifications.
Errata are design defects or errors.
Characterized errata may cause the product's behavior to deviate from published specifications. Specification Clarifications describe a specification in greater detail or further highlight a specification's impact to a complex design situation. These clarifications will be incorporated in the next release of the specifications. Documentation Changes include typos, errors, or omissions from the current published specifications. These changes will be incorporated in the next release of the specifications.