Jangle, an open specification to apply the Atom Publishing Protocol to library services and resources, has just released a draft version of a 1.0 release spec.
The goal of Jangle is to provide a very simple and easily understandable RESTful interface to library data that can be accessed with common commodity Atom clients.
The draft spec has been released to get feedback on the usefulness and clarity of the specification and to solicit ideas for how to improve Jangle for use in actual production environments. If you have any opinions, positive or negative; criticisms, constructive or otherwise, feel free to leave comments.
Grammar and sentence structure could definitely use attention.
For a more in-depth introduction to Jangle, there is an article in the latest issue of the Code4Lib Journal, "Unveiling Jangle: Untangling Library Resources and Exposing them through the Atom Publishing Protocol" available at: http://journal.code4lib.org/articles/109
(although the API responses have changed since this article was written, the basic architecture remains the same).
To join the Jangle development process, feel free to join our Google Group at: http://groups.google.com/group/jangle-discuss or contribute to the development at: http://code.google.com/p/jangle/