This new version, is still tagged as beta (but works correctly with PHP 5.4 and 5.5).

As always

yum --enablerepo=remi update php-pecl-apc

For official repository:

Now, for apache users, the control panel is provided in the apc-panel package, and is available at http://localhost/apc-panel/.

For others, it is still provided, in documentation, as /usr/share/doc/php-pecl-apc-3.1.14/apc.php.