As Centos 6.4 was released today, we have refreshed our Centos 6 install ISOs to the new version, so that new installs of Centos 6 can take advantage of the latest version.
Upgrading from CentOS-4 or CentOS-5:
Centos recommends everyone run through a reinstall rather than attempt an inplace upgrade from CentOS-4 or CentOS-5.
Upgrading from CentOS-6.0 / 6.1 / 6.2 or 6.3
Unless you have edited your yum configs, a ‘yum update’ should move your machine seamlessly from any previous CentOS-6.x release to CentOS-6.4
The Release Notes for CentOS-6.4 can be found on-line at :