Hello together, i'm +1 for myself to bump the PHP version (as i'm using only 5.4/5.5), but -1 for general users.
In general for ZF3 and all later versions: Wouldn't it be possible to directly combine the PHP release process with the ZF minimum required version? The PHP release process is defined clearly since PHP 5.3: https://wiki.php.net/rfc/releaseprocess#example_time_line_with_two_majors_versions So when ZF3 releases in September 2014 or 6 months later, PHP 5.4 is already EOL! (if it would be 6 months later already 5.5 would be EOL). I like the process, how google define the Internet Explorer support timelime: http://googleappsupdates.blogspot.de/2012/09/supporting-modern-browsers-internet.html
