Upgrade time! See the announcement from Wil Sinclair below:

We couldn't be happier to announce that Zend Framework 1.5 Release
Candidate 3 is now available from the Zend Framework download site!

Zend Framework: Downloads

An overview of new features (also included in previous 1.5 Release
Candidates):

* New Zend_Form component with support for AJAX-enabled form elements
* New action and view helpers for automating and facilitating AJAX
requests and alternate response formats
* Infocard, OpenID, and LDAP authentication adapters
* Support for complex Lucene searches, including fuzzy, date-range,
and wildcard queries
* Support for Lucene 2.1 index file format
* Partial, Placeholder, Action, and Header view helpers for advanced
view composition and rendering
* New Zend_Layout component for automating and facilitating site
layouts
* UTF-8 support for PDF documents
* New Nirvanix, Technorati, and SlideShare web services

RC3 already? How time- and Release Candidates- fly! Thanks again to
everyone who has contributed to this release with code, documentation,
and feedback. It seems that we are quickly approaching- or have
already arrived at- a GA-quality release. As we continue to break new
ground in the community (how about the shortest lived RC yet with RC2?
, we should keep in mind that many new and casual users will be
checking out
1.5 once it is released for general availability, and we should be
looking our best with both new initiatives and existing
infrastructure/community sites. We're calling on all community members
to update their own ZF sites and the ZF wiki pages, throw some
blogging love in ZF's direction, and provide feedback on our excellent
QuickStart Contest entries:
Completed Entries - Zend Framework Wiki. Stay
tuned for all kinds of announcements in the next few weeks, including
the QuickStart contest winner, an updated proposal process, new
Zend-lead initiatives, and (with some luck and hard work) the 1.5
release itself!

Again, the Zend Framework community does NOT recommend this release
for production use. We do, however, recommend evaluating new features
in this release with existing and new applications.

Enjoy 1.5RC3 and see you on the issue tracker, wiki, and mailing lists!

__________________
- xentek