I can no longer keep up with the frequent releases of Zend Framework. Zend has just released ZF 1.7.4 last February 2. You can go to their site to get it.
I do not know the details of the release. But from what I have seen in this page, it seems that they have added jQuery. I have been using the Zend Framework + jQuery combo since I could remember and I will probably look into the ZendX_jquery component on my next project.
As of version 1.7, Zend Framework integrates jQuery view and form helpers through its extras library. The jQuery support is meant as an alternative to the already existing Dojo library integration. Currently jQuery can be integrated into your Zend Framework applications in the following ways:
View helper to help setup the jQuery (Core and UI) environment
jQuery UI specific Zend_View helpers
jQuery UI specific Zend_Form elements and decorators