Most people don't believe that Perl 6 is "the next version of Perl".
Citation please.
The language is different enough that "Perl 6" isn't an appropriate name.
The one person who gets to choose the name disagrees.
... each time you say "Perl 6", Perl5 dies a little.
If only that had been true of Perl 5 and Perl 4! Then again, I suppose that adding lexical variables, first-class functions, method dispatch, a library system, and true nested data structures is less of a leap than adding function signatures, a metamodel, multi dispatch, grammars, continuations, junctions, hyperoperators, pervasive laziness, ubiquitous blocks, and I've forgotten a few.