Yes, this is really an awesome news.

This cache is part of  PHP version 5.5.0beta1.

Installation

yum remove php-xcache php-eaccelerator
yum --enablerepo=remi install php-pecl-zendopcache
service httpd restart

For PHP 5.5.0 users (remi-test)

yum --enablerepo=remi-test install php-opcache
It's time to start some tests.

A control panel is missing, but one will probably be available soon.

Of course, it is already submitted for official Fedora/EPEL repositories (Review #911111).

Warning : you can keep APC version 3.1.15dev for user data cache, after checking that opcode is disabled (apc.enable_opcode_cache=0) or, better, switch to php-apcu which is a dropin alternative.