The Qt/Nokia team did not make it clear enough that the qt4-maemo5 libraries are intended as experimental Qt snapshots. These libraries are not intended to be used in final end-user applications.

libqt4 is the correct Qt to be used when you want to promote your application to extras. In PR1.1* firmware this is version 4.5.3, in PR1.2 it will be 4.6.2.

When PR1.2 is released, all applications depending on libqt4 (>=4.6) will be able to be promoted to Extras.

After PR1.2 release the qt4-maemo5 libraries will be renamed to qt4-experimental to make it more clear that this is only to be used as tech preview for developers.