Qt 5.4 is due to be released sometime soon. Plasma 5.2 is due to be released in January. Plasma devs only want to support one version of Qt. There would be a few useful features in Qt 5.4 that Plasma could use but we could also hang back with Qt 5.3 if distros needed it. Would it be a problem to need Qt 5.4 in Plasma 5.2? Jonathan