SL6.2 has been out for a few days now, I haven’t had a chance to really take a look at it, since the more recent SL6 installs I maintain tend to be tracking the 6x releases. Hopefully SL will try and keep inline with the upstreams support schedule.
I’ve a personal preference for deploying SL over CentOS (or any other recompiles of RHEL). SL tends to be a bit more polished in terms of not breaking older installs, i.e. the upstream doesn’t move point releases around as CentOS does, SL does not force the end user to run the latest stable or continually upgrade to the latest point release to get updates (due to the weird convention CentOS seems to have with their archives).
It’s out, I need to look at it again, especially since ZFS is getting closer to being ready for a bit more general usage on the server side and the project that I am working will be needing some machines to be installed and setup soon.