High Quality Content by WIKIPEDIA articles! Perl 6 is a major revision to the Perl programming language. It is still in development, as a specification from which several interpreter and compiler implementations are being written. It is introducing elements of many modern and historical languages. Perl 6 is intended to have many implementations. Backward compatibility with earlier versions of Perl is not a goal, though a compatibility mode is part of the specification. The design process for Perl 6 began in 2000.