Scientific Linux 6.3 Beta 1 Review: Simply outstanding but why on older linux kernel & Gnome shell?

Scientific Linux 6.3 Beta1

I have heard a lot of good words about this distro, though never personally tried it before. So, once I came to know of the release from Distrowatch, I was curious to know and downloaded the 3.5 GB ISO from it's site. It is basically sourced from Red Hat Enterprise Linux and enhanced with extra applications useful for academics, co-developed by Fermi National