What is the status of the W3C SPARQL specifications?
On January 15, 2008, the W3C published the three SPARQL specifications as Recommendations. This means that the specifications have been endorsed by the W3C membership and should be considered stable documents. In February 2009, the W3C re-chartered the SPARQL Working Group (new name) to produce specifications for extensions to the SPARQL language, protocol, and landscape. This new Working Group has an 18-month timeframe.