Alexander Netkachev, an adamant user of the Zend Framework, has posted his own review of one of the new modules found in the Preview Release 0.1.4 - the Zend_Cache
He covers what it is, what the interfaces for the API are, and the backend storage methods it offers. There's a few notes of advice he has to share from his experiences with it - items that have already been fixed in the trunk version (from the subversion repository).
Issued Zend Framework 0.1.4 preview release comes with new interesting caching classes. I tested them at this weekend and I'm glad to say that they can speed up your application dramatically.