RDFa group.
The XHTML2 WG has noted the following paragraph from the TAG:
http://www.w3.org/2001/tag/doc/selfDescribingDocuments#UsingRDFa
"Note: at this time, drafts of the [RDFa] specification are available, but
the media-type registration for HTML itself has not been updated to
reflect RDFa. As described in TAG Finding [AuthoritativeMetadata],
conventions like RDFa are normative only if provided for in the applicable
specification for the media-type in which they are used. Thus, for RDFa to
be fully integrated with 2 The Web's Standard Retrieval Algorithm, the
HTML and/or XHTML media-type registrations must be be updated. Use of RDFa
is in any case encouraged in the interim until that happens."
The XHTML2 WG has discussed it, and strongly disagrees with this text.
http://www.w3.org/2008/02/20-xhtml-minutes.html#item08
We don't believe that a change to the media type is necessary to make RDFa
normative.
Before sending a reply to the TAG, I thought the RDFa TF should discuss
this.
Best wishes,
Steven