I am looking forward to Boo's release myself! There is an event coming up to improve Kubuntu. Kubuntu does not have any unique artwork but that seemed to make customizing it a lot easier. They should have used the Kubuntu Spotlight KDM theme ans splash, just adding these and changing the wallpaper makes Kubuntu look nice without taking away from the good things KDE has by default.
Kubuntu Developers did make some good decisions, the Firefox installer was better than their original plan to use Aurora and K3b pulls in quite a few codecs. OpenSuse managed to fit a complete system on a CD though and Kubuntu Developers might want to examine how this was accomplished. Kubuntu could learn a lot from Boo about usability. The service menus that Boo builds into the KDE CE make administrative tasks very easy, preforming these same tasks in Kubuntu is not very user friendly.
I have to give the Kubuntu Developers some credit this time though, they do not have very many people working on their releases. Ubuntu has all the Developers and nearly all the focus is put on it. Kubuntu hit number 7 on DistroWatch's 7 day list yesterday and they haven't been that high on the list for a long time. The last release Kubuntu had that was very good was Feisty and that was some time ago. Kubuntu fans usually rely on a few talented forum members that help people fix all of the problems that remain in Kubuntu releases. Weather it was luck or development skill that made 9.10 a decent release, I have to give this small group the credit they deserve because they did a lot with very few resources.
I would think that nearly every new KDE release should be pretty decent now because KDE 4 is maturing and qt based applications are maturing right along with it. Amarok and K3b sure are getting better! I really like KDE 4 now and I have never been much of a KDE fan in the past. A year ago I would not have given KDE 4 a second look! KDE 4 has an extremely appealing look and logical layout once you get used to how thing work and they spent months perfecting little details like the oxygen icons. KDE 4 has a huge potential to attract new users to Linux and the Developers didn't forget about the people that prefer the KDE 3.5 look and feel, they built in the ability to satisfy these users too!
The LinuxMint KDE CE will have all of the benefits of KDE 4.3.2, the speed of the newer kernel and it will be user friendly to administer. I can hardly wait!