You misinterpreted me. GTK in itself is not a dead-end, it will continue to exist, if a community supported version is good enough for you. It's the APIs (some of which are GObject/GTK based) whose future is uclear (well, apart from gstreamer, perhaps).

There is a 4.6 tech preview available in extras-devel. While it is missing Qt Mobility, it is more than enough to get familiar with Qt and start development (and you have been hinted with mobility APIs so no surprises there). Qt docs *ARE* very good indeed. And let me repeat - Qt is not just an UI. It does TONS of things besides UI, and when Qt Mobility arrives it will be even more so.