CentOS-5.7 has been released for both i386 and x86_64 architectures. Here the announcement:

We are pleased to announce the immediate availability of CentOS-5.7 for
i386 and x86_64 Architectures.

CentOS-5.7 is based on the upstream release EL 5.7 and includes
packages from all variants including Server and Client. All upstream
repositories have been combined into one, to make it easier for end
users to work with.

This is just an announcement email, not the release notes. The Release
Notes for CentOS-5.7 can be found on-line at :
http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.7 and everyone is
encouraged to look through them once. Also worth browsing through are
the CentOS FAQs at http://wiki.centos.org/FAQ

+++++++++++++++++++++++
Upgrading from CentOS-5.6 ( or CentOS-5.0/5.1/5.2/5.3/5.4/5.5):

If you are already running CentOS-5.6 or an older CentOS-5 distro, all
you need to do is update your machine via yum by running :

'yum update'

Running 'yum list updates' before doing the update is recommended, so
you can get a list of packages that are going to be updated. To check
you are indeed on CentOS-5.7, run : 'rpm -q centos-release' and that
should return: 'centos-release-5-7.el5.centos.1'

If you are running CentOS-5.6 and have the CR repo enabled, a simple
'yum update' will still move your machine to 5.7. But since the CR repo
already contained all the 5.7 updates, there will only be a handful of
rpms that need to be installed for the 5.6 to 5.7 upgrade. If you are
not running the CR repo, we highly encourage everyone to install and run
this repository on their machines. More details on the CR repo can be
found online at http://wiki.centos.org/AdditionalResources/Repositories/CR

+++++++++++++++++++++++
Downloading CentOS-5.7 for new installs:

When possible, consider using torrents to run the downloads. Not only
does it help the community and keeps mirrors from running up high
bandwidth bills, in most cases you will find its also the fastest means
to download the distro. There are currently over a hundred people
seeding CentOS-5 and it's possible to get upto 100mbps downloads via
these torrents.

- -- Via BitTorrent :
CD:
http://mirror.centos.org/centos/5.7/isos/i386/CentOS-5.7-i386-bin-1to8.torrent
http://mirror.centos.org/centos/5.7/isos/x86_64/CentOS-5.7-x86_64-bin-1to8.torrent

DVD:
http://mirror.centos.org/centos/5.7/isos/i386/CentOS-5.7-i386-bin-DVD.torrent
http://mirror.centos.org/centos/5.7/isos/x86_64/CentOS-5.7-x86_64-bin-DVD.torrent

md5sum's for these torrent files:

8e29e525f45c4a7b3a963cc01ec3459a CentOS-5.7-i386-bin-1to8.torrent
32c9e0826b50d6be44823523be403c7f CentOS-5.7-x86_64-bin-1to8.torrent
795d6c11b5ef8907653360af52b9f317 CentOS-5.7-i386-bin-DVD.torrent
04c563f2c838bf6b255fcc5fcc18cf66 CentOS-5.7-x86_64-bin-DVD.torrent

sha1sum's for these torrent files:

8a945ba89b03328480fde20eaa0b638ceb7f4509 CentOS-5.7-i386-bin-1to8.torrent
b1a18ba25e77543c4df9078dfafba990fbd58601 CentOS-5.7-x86_64-bin-1to8.torrent
d3c4ed0d14fe1873bbcee931224e5e8819f779dc CentOS-5.7-i386-bin-DVD.torrent
302850dd4f9a8198b303f872c83a5a16ec1c40c2 CentOS-5.7-x86_64-bin-DVD.torrent


While torrent files will do their own content checks, and only the right
torrent will register and download from torrent.centos.org - its very
important for your own security that an md5/sha1sum check is done on the
.torrent file itself, and ensure that only the torrent.centos.org
tracker is being used. Sha1sum's are more secure than md5's. Whenever
possible, use sha1sum's instead of md5.

- -- Via direct download:
Due to bandwidth considerations the CentOS Project does not publish ISOs
directly from our network machines. However direct downloads are
available from external mirrors over http, ftp and rsync. A geoip
based list is available at http://isoredirect.centos.org/centos/5/isos/
to give you the best predictable match ( and only lists mirrors that are
updated already, so you don't need to waste time looking for a sync'd
mirror )

Some mirrors also publish DVD images that can be downloaded directly.
Refer to the mirrors list page at http://www.centos.org/mirrors for more
details Mirrors that offer DVDs are clearly marked on the page.

+++++++++++++++++++++++
sha1sum for these ISOS:

i386:
6acbf1db3f4dce6dce7df15c54394a7cef6c3a7d CentOS-5.7-i386-bin-1of8.iso
241e5ea801b449ff59191c620db0a6b00b4aaaf5 CentOS-5.7-i386-bin-2of8.iso
0955c2029c1839b1e3601bb4238a2cd6c84e9aca CentOS-5.7-i386-bin-3of8.iso
7e094a60e2ddb7904e425487b8c4936e464f10a5 CentOS-5.7-i386-bin-4of8.iso
3eb0ee0b146140c4ef812d69fbc8712da1c0661d CentOS-5.7-i386-bin-5of8.iso
31b689247da34a58119b91821b13f70424e85a16 CentOS-5.7-i386-bin-6of8.iso
468eb403bd111c77e47bf31693c544ecba2fac97 CentOS-5.7-i386-bin-7of8.iso
18a43be42e159bf37deb87ce8636930ba7856f75 CentOS-5.7-i386-bin-8of8.iso
e0eab4dd77c3ecc73080428beaa4ffe28984dc4b CentOS-5.7-i386-bin-DVD-1of2.iso
29158f1fc82022164a1617ce625bce4cee2480e7 CentOS-5.7-i386-bin-DVD-2of2.iso
3155e9f36dfccda5ce6cb1d60d07972b69ee6f0f CentOS-5.7-i386-netinstall.iso

x86_64:
cb01b0fa28367e6179a6498c52e014c43188ca86 CentOS-5.7-x86_64-bin-1of8.iso
fb76b1bdf39d0130fc774c086e26da4a36584ce4 CentOS-5.7-x86_64-bin-2of8.iso
d0f56df3c0756649f8068fac81c1402784fc506e CentOS-5.7-x86_64-bin-3of8.iso
1c7c77100b30c6fec3ad824bc25526a48417d3df CentOS-5.7-x86_64-bin-4of8.iso
79f8dd2de38455418aae2eaa4a404314d0c3cfa7 CentOS-5.7-x86_64-bin-5of8.iso
1d387fbfaf380c30ea90753c8311bf961e0f8394 CentOS-5.7-x86_64-bin-6of8.iso
324540e8266bdb10649e07f27f1717342a3e66c4 CentOS-5.7-x86_64-bin-7of8.iso
88c23f2d2dd78607e48041dc764ee6e6c1c11104 CentOS-5.7-x86_64-bin-8of8.iso
53be2b60dfebeded1d5a0a81cab2845579a952eb CentOS-5.7-x86_64-bin-DVD-1of2.iso
60a0e6093230c50f2d18730106ec5b8b3a200aa3 CentOS-5.7-x86_64-bin-DVD-2of2.iso
a50f28edeb6835ecb478406de1568993a128f208 CentOS-5.7-x86_64-netinstall.iso


+++++++++++++++++++++++
md5sum for these ISOS:

i386:
dc856604d09a3b6777aa1bb512a1935f CentOS-5.7-i386-bin-1of8.iso
6c6bfc2e10c3e801783ff1c5597f46dc CentOS-5.7-i386-bin-2of8.iso
49589116dccf75fbd9649ec7fb3b99b4 CentOS-5.7-i386-bin-3of8.iso
27261f30d80d91673dfb4bbf1f4aa3f5 CentOS-5.7-i386-bin-4of8.iso
2bb5e1bf2aa6a783e36337e713f92437 CentOS-5.7-i386-bin-5of8.iso
c3ae081765767c8e5a63f809502c1004 CentOS-5.7-i386-bin-6of8.iso
83c55db138f03302f68c3d5364ca5e73 CentOS-5.7-i386-bin-7of8.iso
8b28bf769035010a2142e73a408705ff CentOS-5.7-i386-bin-8of8.iso
f64544635a0e1198899eb756072622f5 CentOS-5.7-i386-bin-DVD-1of2.iso
048110b6c42ac84c1cf8408b75202e16 CentOS-5.7-i386-bin-DVD-2of2.iso
11222d9134cdfc101f6f91fe544254c9 CentOS-5.7-i386-netinstall.iso

x86_64:
53d5f304659a9191da45e0ccb1f661f7 CentOS-5.7-x86_64-bin-1of8.iso
9620981e376f04d1473f7dc13937cf9b CentOS-5.7-x86_64-bin-2of8.iso
b2d3bab3cef53da372bf95a3ac0ef16b CentOS-5.7-x86_64-bin-3of8.iso
09328f8fe5b0165b170dcdf1d4875edd CentOS-5.7-x86_64-bin-4of8.iso
0d1a88ca346e29018c3215edd34df1d1 CentOS-5.7-x86_64-bin-5of8.iso
166d128cb7256b388bbb31b49f690e3e CentOS-5.7-x86_64-bin-6of8.iso
9950dfb79e42dc42ef2b38da7580f9db CentOS-5.7-x86_64-bin-7of8.iso
5f6c110adacacaf83a43d73e5bda0ce1 CentOS-5.7-x86_64-bin-8of8.iso
55eadec0a6e87c5f2883f734d43fdb58 CentOS-5.7-x86_64-bin-DVD-1of2.iso
d123b70711c8222364c0ea9a5e4a11e7 CentOS-5.7-x86_64-bin-DVD-2of2.iso
5db3d49ba7a2c56810822914fadc1edf CentOS-5.7-x86_64-netinstall.iso

+++++++++++++++++++++++
Note about media:

We have tried to standardise on the media between the i386 and x86_64
architectures. Each now has the same number of CD images and the same
number of DVD images. CD #8 on i386 contains no rpms, and is not needed
for any install type. DVD #2 on both i386 and x86_64 only contain
Openoffice langpacks for languages others than english. Therefore DVD#2
is only needed when doing a desktop install, with the openoffice
components selected with other than English language support.

+++++++++++++++++++++++
Sources and Debuginfo packages:

srpms and debuginfo packages are still making their way to the CentOS
mirrors and should be online by the 20th September. We are considering
changing the way we handle sources and debuginfo rpms in order to better
manage publishing them and to free up mirror space. For now there will
be no change to the way things are running. Any change will be
communicated clearly, and we will do our best to make sure it has as
little user impact as possible.

+++++++++++++++++++++++
Getting Help:

The best place to start when looking for help with CentOS is at the wiki
( http://wiki.centos.org/GettingHelp ) which lists various options and
communities who might be able to help. If you think there is a bug in
the system, do report it at http://bugs.centos.org/ - but keep in mind
that the bugs system is *not* a support mechanism.

Some Friendly URLs :
http://www.centos.org/
http://wiki.centos.org/
http://lists.centos.org/
http://bugs.centos.org/
irc://#centos@irc.freenode.net


+++++++++++++++++++++++
A big thanks to everyone who contributed towards this release, including
the translation teams, the qa team, the artwork team, the CentOS
Developers and all the users out there. And a special shout out to all
the donors who have contributed machines, bandwidth and infrastructure
towards the CentOS Project.

Enjoy!

- --
Karanbir Singh