The RSS 1.0 specification was released on 2000-12-06.
It was published along with guidelines for the design of RSS Modules so that RSS can be easily extended.
http://purl.org/rss/1.0/modules/ can be used to represent the class of RSS modules.
The following modules are official modules of the RSS-DEV working group:
RSS has an RDF Schema available. A copy is also embedded in this document.
Leigh Dodds has created a Schematron Schema for RSS 1.0
Development and discussion of RSS takes place on the RSS-DEV Mailing List. Feel free to email the list with any questions regarding RSS that you may have. This is also the place to mail your suggestions or corrections to this namespace.
The following sites also provide more information on RSS:
Use of the RSS CSS Stylesheet will help the specification display properly.