And I don't see any significant value in having the latest version of Qt Creator; I'm currently using Qt Creator 2.4.1 (SDK 4.7) for Maemo work, Qt Creator 3.1.2 (SDK 5.2) for Sailfish work, and Qt Creator 3.3.0 (SDK 5.4) for Android work. They're all pretty much identical in terms of how they work, other than that they all support some radically different Qt features.