The Framework continues to mature rapidly, and this release adds new components and enhancements including the following:
* Lucene-compatible search engine query language
* New Authentication component and improved ACL design
* Improved MVC implementation and documentation
* Improved Session-handling design
* Integrated Google Data API Client
* Improved XmlRpc client and server
* Improved Http Client design, supporting cookies and proxy servers
* New Web Services client for Simpy social bookmarking
* Emerging components for I18N, Getopt, Mail folders, and many other enhancements to components and documentation.
http://framework.zend.com/changelog
source: http://framework.zend.com/