The Internationalization Working Group has published a First Public Working Draft of Internationalization Best Practices for Spec Developers.
This document provides a checklist of internationalization-related considerations when developing a specification. Most checklist items point to detailed supporting information in other documents. Where such information does not yet exist, it can be given a temporary home in this document. The dynamic page Internationalization Techniques: Developing specifications is automatically generated from this document.
The current version is still a very early draft, and it is expected that the information will change regularly as new content is added and existing content is modified in the light of experience and discussion.