Currenst Status

XFS 1.3
4th prerelease is out now
native byteorder incore extents
support for sector sizes != 512
lots of speedups

Linux 2.4
part of Alan Cox's tree now
required patches slowly go to Marcelo

Linux 2.5
lagging a little bit behind 2.4 sometimes
XFS takes advantage of lots of 2.5 core changes

xfsprogs
included in all major Linux distributions except Red Hat
ported to FreeBSD, Darwin and IRIX (again)