Yes, this is really an awesome news.
This cache could be part of next PHP version 5.5 and replace APC which will be abandoned or maintained only for user data cache.
yum remove php-pecl-apc php-xcache php-eaccelerator
yum --enablerepo=remi install php-pecl-zendoptimizerplus
service httpd restart
This is not yet an official released version, but, I think, this project is enough mature, indeed this is the first existing opcode cache.
It's time to start some tests.
A control panel is missing, but one will probably be available soon.
Of course, I plan to submit it soon for review for official Fedora and EPEL repositories.