7.0.4 being marked as "stable" on pecl. 7.0.4 - 2015-01-12 - Added function opcache_is_script_cached() - Fix bug #67111 (Loop variables need to be freed for both "break" and "continue") - Fix opcache.revalidate_freq per-request behavior - Fixed bug #67215 (php-cgi work with opcache, may be segmentation fault happen) - Fixed issue #183 (TMP_VAR is not only used once)
Tested on 2 machines with PHP 5.4.37, seems to work fine.
7.0.5 - Fixed bug #69281 (opcache_is_script_cached no longer works) - Fixed bug #68677 (Use After Free in OPcache) - Make killing a locker an ERROR event - Fixed bug #69125 (Array numeric string as key) - Fixed bug #69038 (switch(SOMECONSTANT) misbehaves) - Fixed segfault while running with moodle
Since 5.4 is deprecated now, it has no meaning.