There are several concurrent projects in the works to help make the transition easier. merlyn
has been approached to verify there is nothing preventing someone from translating the code in the Llama to Perl6, which apparently there is not. Another project is to make the Perl6 Cookbook, which Ovid
has recently started working on.
And while Perl6 is still going to be the essence of Perl at its heart, it is a complete re-write. You should familarize yourself with the As, Es, and Ss - which can be found at http://dev.perl.org/perl6/.