Sitio oficial:
http://www.centos.org
CentOS 4 Releases
The CentOS team is pleased to announce the availability of CentOS 4.4. Major changes in 4.4 include a) Mozilla Suite has been replaced by Seamonkey and b) Firefox Web browser and Thunderbird have been upgraded to v1.5.X. These improvements along with many more are detailed in the online release notes
here and
here
These architectures are complete and released as final:
CentOS 4.4 i386.
CentOS 4.4 i386 LiveCD.
CentOS 4.4 x86_64.
CentOS 4.4 i386 Single ServerCD
CentOS 4.4 IA64
CentOS 4.4 s390
CentOS 4.4 s390x
CentOS 4.3 for Alpha
The following architecture are beta releases:
CentOS 4.0 for ppc32
CentOS-4.2Beta for sparc