Here’s a news item from Cnet stating that Zend plans to launch the 1.0 version of Zend Framework during the next PHP Conference in October.
“Zend announced the open-source Zend Framework at the company’s 2005 PHP conference and plans to release version 1.0 or a preview version of it at the next show on Oct. 29 in San Jose, Calif.” 

Link: Zend to show PHP tools in October | CNET News.com