Just had a look at the Red Hat Enterprise Linux 6 beta package list, and it looks quite well put together. With a very interesting tilt towards developers and people building large scale platforms. Ofcourse there is the expected virtualisation, storage and cluster suite improvements.
Disapointed that Exim is going away, its become my mta of choice over the last few years. Also disapointed that ruby is at 1.8.6 and isnt going to make 1.9.x. Although, having rubygems in the distro is good. Same with all the major Version control systems are now included, svn, git, cvs, rcs, mercurial and bazaar
On the other hand, python 2.6 is cool. Along with the inclusion of ipython, turbogears and pylons. Like the fact that amqp via qpid ( my implementation of choice ) are also included in the base distro. Same with FCoE, been testing it over the last few months and would be really nice to see it in a supported format now.
Also amongst the interesting stuff : bacula replacing amanda, like it. Sysklogd replaced by rsyslog, like it. Vixie-cron replaced by cronie, like it. Al the system-config-* tools are gone, dont care - never used them myself anyway. Xfs is now in the mainstream supported mode along with ext4, like it. Completely Fair Scheduler in the kernel, like it. No drbd, odd given that its being used quite a lot.
This is just a first look reaction, over the next few weeks I'm going to try and poke around a bit more and will blog about more specific things.
We use Exim, but build from source, so having it removed from the distro is not a problem for us. (For what we want to do now, Exim 4.71 is the minimum we can use.)
syslog has already been replaced by rsyslog in RHEL 5.2 or 5.3. 
Yeah, I wish they didn't remove Exim, we use it too. I guess we'll just build our own packages.
We too have some machines using DRBD. Did they remove it without a replacement? Though I am pushing to replace some of our DRBD setups with CARP this won't be doable in all our cases, so it would be nice to know what would be "the way"(TM) to go with RHEL. 
Laszlo : thats not correct. rsyslog is offered as an optional install. it does not replace sysklogd in EL-5.
If you use DRBD and would like to do something worthwhile, please use your support contract to request support for DRBD in RHEL6. You can reference this protected Bugzilla bug:
Karanbir: Thanks. I am still somewhat new to RHEL/CentOS (coming from BSD and Solaris) and I am still confused by the magnitude of sources for the software ;-) 
Pretty bad news that all system-config-* tools are gone :-( !
Hi,
Răzvan,
Are there any xfs tools though ? They couldnt take ruby to 1.8.7 at the very least??? :-) 
Happy to see Bacula in RHEL6. This is a nice confirmation of what I've been saying: Bacula is the best open source backup. More modern design, your choice of MySQL, PostgreSQL or (soon) Ingres for the Catalog, allowing faster restores and better management reporting. Of course, I'm a little biased - Kern Sibbald (Bacula author and project leader) asked me to be CEO when he started Bacula Systems 18 months ago to provide professional support. We've kept everything under GPLv2, even the Enterprise Edition. Our latest customer is MIT. We offer a great training program for Bacula. I would welcome any feedback / suggestions: jack.griffin at baculasystems dot com. 
Nice work
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