poor choice of words perhaps
While Dolphin is not a direct update of the Konqueror code, it is KDE's updated file manager; if that clarifies any confusion.
In my case, I do recognize that it was an early version when I gave it a go. My thinking was that when Debian 6 Stable releases with KDE4 default it will be more polished and ready for another go. Nothing is compelling me to move from 3.5 yet so KDE4 remains a "nice to have" option that will come in the future. I'll also have to check out the reduced resource needs as the last time I had it on old hardware, the system completely choked.
With Dolphin, it was the better integration that I really liked. Xpdf is just not as clean as Dolphin's plugin viewer. With 3.5, I have to open a PDF in an external Xpdf window rather than embedded inside Konq. A PDF viewed within Dolphin had nothing that made me want to open it into a separate Xpdf instance. After all the grumbling read online, I was left wondering what the grief was about.