This document provides an overview of the entire set of documents collectively referred to as ARINC 653. As this set of documents evolves, Supplements to Part 0 will be made more consistent with Parts 1 through 5 in conjunction with the technical changes expected to be made in the evolution of ARINC 653. A summary of the ARINC 653 documents follows: Part 0 - Overview of ARINC 653, Part 1 - Required Services, Part 2 - Extended Services, Part 3 - Conformity Test Specification, Part 4 - Subset Services, and Part 5 - Core Software Required Capabilities. Supplement 1 reflects the introduction of multicore processor support in Parts 1 and 2.