I don't think this is true. There's Perl 5 and there's Raku. All that happened is Perl 6 became Raku because some people didn't want Perl changing that much.

I don't think this is true. There's Perl 5 and there's Raku. All that happened is Perl 6 became Raku because some people didn't want Perl changing that much. So Perl will jump version 6 and naturally evolve into Perl 7 at some point.