dataTypes and classification schemes

Dear's,


somewhere on the web i've seen

<?xml version="1.0"?>
 <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
             xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
             xmlns:dc="http://purl.org/dc/elements/1.1/"
             xmlns:dcterms="http://purl.org/dc/terms/">
 <rdf:Description>
  <dc:subject>
    <dcterms:MESH>
      <rdf:value>D08.586.682.075.400</rdf:value>
      <rdfs:label>Formate Dehydrogenase</rdfs:label>
    </dcterms:MESH>
  </dc:subject>
 </rdf:Description>
 </rdf:RDF>


I have received a message indicating, that such construction might
become illegal  or deprecated in a few weeks by W3C.
Would like some clarification by the WG on this. (I'm not 100% sure,
whether this question is related to the current dataTyping proposals.)


Thanks in advance,
rs