How to upgrade 7.1 to 7.2?

Hi all, How do I upgrade 7.1 to 7.2? I've updated the kernel to 2.4.7, but I still get the 7.1 splash screen and the control panel in KDE tells me that I'm running 7.1. What are the other essential differences between 7.1 and 7.2 (other than a newer kernel)? Does the fact that I used the 2.4.7 kernel from the 7.2 release tree when I'm running 7.1 matter? Many thanks David.