Perl6 is mostly complete. Even though it has been getting significant weekly performance improvements (they have a weekly summary of these things), it still has a long way to go. It has a lot of really cool things such as simple to use concurrency, grammars, gradual typing...etc. It is a big language, but not super hard to learn. A bunch of books have been released on it in the past two years. Perl5 is used by companies now. Some are choosing to write new software in it, but there is a lot of legacy apps.
Remember that they are two different languages with some similarities. Perl6 has really good support for making big apps I would say as it has really good OO support out of the box in addition to making FP concepts easy too. Perl5 has atrocious support baked in, but they have the excellent libraries that everyone uses to give them world class support for OO. Still, it feels more natural in Perl6.
On another note, Groovy is another great and fast language that runs on the JVM and works very well in the scripting space with a lot of DSLs for GUI, XML, DB...cool stuff.