Thanks to the fact that Karanbir is now back in action, the QA team is now working on the 5.3 QA tree at full speed. There are some nice things in 5.3 (you can already look at the Upstream release notes). We've already discovered some missing deps and other new good things. Of course everything will be reported on the Wiki/in the CentOS 5.3 specific release notes.
One of the thing that astonished me is the fact that (even if not written in Upstream RN) some drivers seem to have been updated. For example the sky2 module didn't support the Marvel gigabit 88E8056 nic since 5.1 .. but .. :
[arrfab@waldorf \~]\$ modinfo
[arrfab@waldorf \~]\$ modinfo /lib/modules/2.6.18-128.el5/kernel/drivers/net/sky2.ko |grep alias|wc -l
Interesting , isn't it ? (especially for people having that kind of low-level entry nic in their workstation ..)
Other interesting stuff is the newer scsi-target-utils (aka tgtadm/iScsi target) that now includes a config file and two helpers to setup a new iscsi lun easily (tgt-setup-lun and tgt-admin) .. of course there are other new good things so stay tuned for more informations and of course, don't forget to read the Release Notes when they'll be published !