As discussed during one of the IRC meetings, the ZF pregenerated classmap probably won't be part of the release, so the docs need to be updated.

Zend_Loader-ClassMapAutoloader.xml

    In order to use the ClassMapAutoloader, you first need class
    maps. Zend Framework ships with a class map per component or, if you grabbed the entire
    ZF distribution, a class map for the entire Zend Framework. These maps are typically in
    a file named .classmap.php within either the "Zend" directory, or
    an individual component's source directory.