i really didn't want to blog again today, but then i read that "we may see konqueror vanish" due to dolphin being in kdebase. some other sites picked this up, of course, because it's sensational. like many sensational headlines, it's also wrong.
i blogged about this once already a while back, but let me state it again really clearly:
konqueror is a power user's application that can not be fully replaced by something like dolphin (and vice versa). they have different use cases and different target audiences. both are valid concepts and both will be sharing the vast majority of their code, sort of like how kwrite is little more than a shell around katepart.
what is on the plan right now is for dolphin to become the file manager that gets launched from the default panel buttons and by apps requesting to launch a file manager. and just like in kde3 you will be able to configure all of this quite easily so that it uses konqueror (or whatever other tool you prefer, e.g. krusader) instead.
moral of the story: if you have a question try asking the people involved and you'll probably get an informed answer.