Frankly, there haven't been any significant changes in Perl on the language level between 5.6.x (which the third edition covers) and 5.8.x. Most differences are either internal (which the camel doesn't cover anyway), of the form "$XXX works (much) better now", with $XXX things like Unicode and threads, or environmental, like a lot more regression tests.

Read perl58delta (which documents the differences between 5.6.0 and 5.8.0) and wonder if that enough to take Larry away from perl6 for a year to write a new Camel.