Hi,

Just to try it, I tested Plasma 5 on my computer. At this stage, it is still called Plasma 5, instead of KDE 5 because the software around the desktop is not all ready for Qt5.

Also, I provided some screenshots showing Trinity apps being run on Plasma 5. They have to be launched manually from Konsole, but they run run very well and they are even well integrated, when QTCurve widget style is used.

IMHO, Plasma 5 is much more agreeable and pleasant to use than it was in KDE4. Yes, it is much slower than Trinity, but it features less nonsense than KDE4. It has not crashed on me for the ''small'' time I tried it. The new K menu is a kind of hybrid between what is the Kicker and the Kickoff menu in Trinity.
From what I can see, it will make forget the KDE4 series pretty soon, when it will be ready, but Trinity performance and useability is still unbeatable :)

Please be reminded that I only posted these screenshot for curiosity and nobody has to look at it.
If you want to comment, please be open-minded.

-Alexandre