I'd love to be optimistic about all of this, and I'm trying very hard - Qt has an impressive track record for avoiding flops (things like Phonon aside.. *ahem*) - but the fact that this stuff exists in the way it does now doesn't fill me with optimism. Unless they push hard to shoot for the skies, people will always always going to put up with stuff that "works".

Even if we do leave aside the QMaemo5 stuff that will cause nightmares both in terms of moving to harmattan, and in terms of other platforms (I won't beat that drum again), that still leaves Dui* existing in a rather odd not-in-mainline-not-in-any-other-platform-than-maemo type void, without a clearly defined purpose for existing in the first place. And it doesn't just subclass QApplication, it seems to subclass just about everything.

And @vvaz: yes, it's a technical preview, for which I am very grateful. Qt 4.6 has demonstrated fairly well that developing out in the open is a wonderfully productive methodology to use. I just hope that the feedback in this thread isn't going into /dev/null, and they're actually going to address the concerns people are raising.