Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Hot off the oven, the latest from KDE was released just a few days ago. It builds on the greatly improved and reliable KDE 4.4 and 4.5 series and brings a number of exciting new features and enhancements, as well as a cool new look thanks to an impressive new wallpaper and much improved Kwin effects.
KDE SC 4.6 brings a completely redesigned activities system. I have to say I have never used it (and honestly don't see it that useful), but it seems this new system is less complicated and more intuitive. On the other hand, one piece that has also got a new design from the ground up, one I do care about, is the Power Management configuration system.