SPARQL 1.1 Federation Extensions

Are there any plans to extend federation extensions to cover SPARQL Update.
 
For nearly every example in the SPARQL Update WD, I can see a way to incorporate federation extensions e.g:
 
PREFIX dc: <http://purl.org/dc/elements/1.1/>
INSERT DATA { 
 SERVICE <http://example1/sparql> {
  GRAPH <http://example1/bookStore> { 
   <http://example/book3>  dc:title  "Fundamentals of Compiler Design" 
  } 
  GRAPH <http://example1/bookstore2> { 
   <http://example/book3>  dc:title  "Fundamentals of Compiler Design" 
  } 
  GRAPH <http://example1/bookstore3> { 
   <http://example/book3>  dc:title  "Fundamentals of Compiler Design" 
  } 
 }
 SERVICE <http://example2/sparql> {
  GRAPH <http://example2/shop> { 
   <http://example/book3>  dc:title  "Fundamentals of Compiler Design" 
  } 
  GRAPH <http://example2/shop2> { 
   <http://example/book3>  dc:title  "Fundamentals of Compiler Design" 
  } 
 }
}

I am sure the benefits would be huge.
 
Many Thanks,
 
William Greenly
Volkswagen UK Technical Lead