In Padraic Brady's latest post he makes a pitch for developers out there to get in on the development of the Zend Framework version 2.0 "before the offer ends" in a few different ways.
Zend Framework 2.0 recently passed Milestone 1 on its development track and is rocking on PHP 5.3 in all its namespaced glory. Milestone 2 is the introduction of the new Exception regime to ensure all of the frameworks' fun components throw Exceptions that are specific enough to be useful. Why waste your idleness on the Devil's work when you can be bringing salvation to armies of PHP programmers?
He links to some great resources if you want to get involved including the list of who's working on the exceptions handling, a link to the components and maintainers list for the framework and at getting started with Git guide to introduce you to the version control you'll need to use.