Not only will perl5 still be around and useable, perl6 will continue to be Perl. Object Orientedness is not being forced on anybody, from what I can tell. There may be improvements going on in that area, causing much noise to be made, but the rest of the language is not going to disappear. I feel reasonably confident that perl6 will possess the spirit and nature of the Perl you know and love today. After all, look who's making it -- Larry and the gang didn't suddenly gain a dislike for the language they've spent all these years creating.