Finally been waiting for it since the day I knew which kernel RHEL7 used, as I really wanted that release was to use bcache feature that was patched in 3.10 kernel, has I got a 500GB HD and a 64GB SSD in my laptop. Sadly will have to fiddle with it manually to use, as bcache is only planned to be added to anaconda in Fedora 22. I just hope bcache-tools package is in centos repository.
No announcement yet.
CentOS 7 Release Relives RHEL7 As A Community Project