Question about Definition of Simple Literal

Hi all:
    I have a question about the definition of simple literal.
    In SPARQL 1.0, I find the definition of simple literal is 
simple literal denotes a plain literal with no language tag.
    And I search the SPARQL 1.1, I find the definition of simple literal change to that
18.1.2 Simple Literal
Definition: Simple Literal
The set of Simple Literals is the set of all RDF Literals with no language tag or datatype IRI.
    I want to know If it is the same, or the last one is the right one ? 
    I want to make a definition of simple literal, but my research is based on sparql 1.0, the definition of simple literal make me 

    Wish your reply!
    Thank you!


xingwanghan@tju.edu.cn