Lorna Mitchell has added a new post to her blog about adding in PUT variables to your Zend Framework Zend_Request object (useful for web services).
Its very simple: I have extended Zend_Controller_Action with my own, and all controllers inherit from here. This has a routeAction() which grabs the incoming variables from a PUT request and sets them as parameters within the usual $this->getRequest() scope, then forwards on the request.
Her example adds a call to the isPut method to check for the PUT request type and, if found, takes in the request values and pushes them back into the action's parameter values. Then the controller can make a call back to the request object to pull in the parameters when needed.