Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Well, this has been a bit of an odd situation. Linux Mint KDE and Xfce releases normally seem to follow the main Cinnamon and MATE releases by about a month or so. This time, however, the release candidate versions of these distributions didn't even show up until a good month after the main release, and it was almost another month before the final Xfce release was available. The final KDE version was finally released another week after that.
I wonder if this is an indication of some specific problems, or if the Mint developers are simply getting overloaded? I didn't see anything in the release announcement for either version which shed any light on this.
My first experience with Mint 15 KDE was unfortunately not good: it doesn't install properly on either of my UEFI boot systems.