The ITIL 2011 Editions have been updated for clarity, consistency, correctness and completeness.
In order to meet current and future business requirements, 'ITIL Service Design' provides guidance on the production and maintenance of IT policies, architectures and documents for the design of appropriate and innovative IT infrastructure services solutions and processes.
The updated ITIL publications share a similar standard structure (including generic content in Chapters 1, 2 and 6), to improve consistency and aid navigation. Some content has been reorganized to improve flow and readability, and ensure alignment across the suite - including clarification around interfaces, and inputs and outputs across the service lifecycle.
Terminology has been clarified and made consistent across the publications and the ITIL glossary.