On the Zend Developer Zone, there's a new post that has the info on how you could get your hands on a free copy of Zend's Studio software (a $300 USD value).

My good friend Avigail was kind enough to cough up some copies of Zend Studio and even a license for Zend Guard. [...] We've got a quiz (No, not a survey, a quiz!) to test your mad Zend Studio skillz. If you don't have said skillz, I'd suggest downloading the Free 30 Day Trial of Zend Studio and develop them.

Once you are a Studio-Fu master, take the quiz by clicking on this link.

First prize is a Zend Studio perpetual license + Zend Guard annual license, second prize (3 winners) are licenses for Zend Studio Professional, and third prize winners (200 winners) get a 50% off coupon for a purchase of Zend Studio.