A month and a half has passed since the release of Red Hat Enterprise Linux 5.5, but CentOS 5.5 has finally made it out into the world as the community equivalent to the RHEL5.5 packages. CentOS 5.5 is available for i386 and x86_64 systems and there continues to be LiveCDs of it for those interested.
The release announcement for CentOS 5.5 can be read on their mailing list
. There is also the CentOS 5.5 release notes
The CentOS 5.5 packages and features match that of Red Hat Enterprise Linux 5.5. Among these changes include new hardware support, run-time memory allocation for KVM guests, EXT4 file-system support, Fibre Channel over Ethernet capabilities, eCryptfs support, and many other new items to assist those running CentOS/RHEL in a server or workstation environment.
Meanwhile, Red Hat has been focusing on delivering Red Hat Enterprise Linux 6.0 with there already being the first public beta