RDF 1.1 is a W3C Recommendation

World Wide Web Consortium (W3C) has announced that RDF 1.1 has become a “Recommendation.” RDF 1.0 was published in 2004.Over the years, the RDF Working Group has published a set of eight Resource Description Framework (RDF) Recommendations and four Working Group Notes.

Whats new in 1.1?

identifiers are now IRIs (“Internationalized Resource Identifieers” — they were “RDF URI references” before).
language-tagged literals now always have the rdf:langString datatype
simple literals, i.e., literals without datatype do not exist anymore
introduction of datasets (difference to SPARQL is that graph name can also be a blank node)
a couple of new XSD datatypes are now compatible with RDF, namely xsd:duration, xsd:dayTimeDuration, xsd:yearMonthDuration, xsd:dateTimeStamp
new rdf:HTML datatype.
semantics uses the notion of “recognized datatypes” instead of a “datatype map”.