I develop with Qt for years. It's a really GREAT framework and not only a GUI toolkit (dbus, xml, network, graphics, sql, and much more), all that with a well organized object hierarchy, great documentation and support available.
Trolltech guys have great experience over crossbuilds and embedded system.
You really write code once, build and run it everywhere.

Before hating, please experiment it a bit, it's has very nice surprises.

Just one example: qt works with properties, signal and slot, just adding a couple of line of code you may export those on DBUS, for that reason I'm coding daemons too with qt, linking qtcore and qtdbus, doing nice things with very little coding.

Anyway you are always free to use glib, gtk, dbus, expat, libc, stdc++, vala, and mix all the other libraries, finding documentation in several place without a great offline crossreferenced help, playing with autotools and so on if you feel better

In the long term I think that Nokia wants to provide for its devices an integrated IDE like XCode for apple.
The difference is that here the code is free, and you have bindings for a lot of language and not that objective-c crap.
You are always able to mix qt with other libraries c/c++ code.

So IMHO it's a nice line I'm very happy for that.

Niko