Do we have a plan for new Techniques

The rdf techniques document ( see 
http://www.w3.org/WAI/GL/WCAG20/WD-WCAG20-RDF-TECHS-20040121.html
 was put on hold whilst we concentrated on critical technologies.
Do we have any plan for now revisiting less critical technologies? (SVG, 
XHTML 2.0 , RDF...)

Also many checkpoints were downgraded because of the lack of supporting 
techniques for success criteria that make it reasonable on most or all web 
content. Ironically, the technologies that were off the critical list often 
supported these success criteria.
When we have the techniques, is there any mechanism for revisiting the 
checkpoints?

All the best
Lisa