RHEL 5.4 is out, Centos 5.4 forthcoming By joe September 2, 2009 - 1 minutes read - 37 words According to LWN (what, you’re not a subscriber? For shame!) Redhat EL 5.4 came out. With a long awaited feature. XFS. Redhat, its about time. It was added into the kernel … what … 8 years ago?