Not directly, sadly. I can make an educated guess though, since Perl 5 has since adopted many of the features thought up for Perl 6. Particularly try looking at its OO features, in regards to roles, parametrized roles, reflection and automated attribute/constructor creation. I can't say with confidence, but i suspect the number of languages having all those features is very low, if existent, and the number of languages with some of these features is also low.
Do note that you will have to look closely and follow references to make sure you have a full picture of understanding, since at first glance many of them seem simple, but turn out to offer considerable depth.
I'm not sure if Perl 5 has adopted these features, but these features have been implemented in Perl 5 via modules [0], which is excellent - but sadly, this is vastly different than being in core, or even having the modules in core. I don't even think you can set default attributes in Perl 5 methods. You still have to pass around the object, shift it off - a whole lot of boilerplate.
Something as simple as that has been proposed, but it's not been in production for Perl 5. (without Moose and friends, of course)
Really, there hasn't been a terrible amount of new features in Perl 5 - and certainly not a new model for OO. Moose is great! And the constant release of CPAN modules is also wonderful, but the core of Perl 5 is full of dragons, which makes backporting features from Perl 6 hard to do in core - and perhaps a good argument can be made against doing that. Example: Moose is a very successful project, but thee given/when statement in the core of Perl was a failure.
Do note that you will have to look closely and follow references to make sure you have a full picture of understanding, since at first glance many of them seem simple, but turn out to offer considerable depth.
http://doc.perl6.org/language/objects