I vote to not update to CentOS 6.5.
I haven't gotten any announcements about CentOS 6.5 being released yet, so I can't safely vouch for a version that I haven't seen. I'd also suggest leaving the OS at CentOS 6.2 unless there's a special reason to update to CentOS 6.5. The main reason for not updating is because QA has fully tested and vetted CentOS 6.2. We also do security updates during general and patched releases for critical security updates that pertain to the AirWave server.