For those interested, I switched a SL 6 desktop I use at my desk to CentOS 6 without a hurt...
Did :
Downloaded centos-release-6-0.el6.centos.5.x86_64.rpm and redhat-logos-60.0.14-10.el6.noarch.rpm from CentOS repo
rpm -e --nodeps sl-release redhat-logos rpm -hiv redhat-logos-60.0.14-10.el6.noarch.rpm centos-release-6-0.el6.centos.5.x86_64.rpm
yum update
reboot, and voilĂ
The only thing I noted, is that the boot screen (the image that covers the init scripts) is still centos, but the shutdown one is centos'
Have fun and thanks for that great long awaited release.
Regards,