Here's what they say on the Puppet blog about this: <a href="http://www.puppetlabs.com/blog/relicensing-puppet-to-apache-2-0/" rel="nofollow">http://www.puppetlabs.com/blog/relicensing-puppet-to-apache-...</a>
This is probably a good thing for Puppet. If the want to drive adoption of their software in the enterprise, it's better to switch to a more permissive license than the somewhat Idealistic GPL. It will make corporate legal departments more comfortable with the idea of using Puppet.
you should work on your about page. Do a five minute usability test and ask five random people what puppet does. Hint: The only clue is hidden in the book ad at the very end of the page.