Soon, a new version of openSUSE will be released. It will bring many nice improvements, but for my part, the most important one is KDE 4.6. I think that I might have used this line before, but it's really what I do feel about KDE. "KDE 4 is finally ready for mainstream usage". KDE 4 in it's early releases was horrible to say the least.
KDE 4.6 is so much easier to use, and the overall experience just feels awesome, it doesn't get in my way while working with something, it just works and enables me to work in a more efficient way.
If you are a Ubuntu user, try openSUSE, you will most probably never go back to Ubuntu =). And most importantly, you will realize how limited Gnome actually is.
11.4 also includes the almost famous 200 line kernel patch that improves UI responsiveness and desktop experience: http://www.osnews.com/story/24042/The_200_Line_Linux_Kernel_Patch_that_D...
Read about the RC release here