Qt for Tizen is currently developed externally from the Qt code-base but the fifth update brings it in line with Qt 5.2 RC1 and the upstream Tizen 2.2.1 Linux operating system.
Qt for Tizen Alpha 5 also features improved Qt Quick Controls for Tizen applications, better screen orientation change detection, and handling for Tizen's virtual keyboard.
More details on Qt for Tizen Alpha 5 are available from the project's blog. Qt for Tizen is mainly targeting mobile and In-Vehicle Infotainment (IVI) applications. Meanwhile, upstream Qt 5.2 should be released very soon and it has many great features for this leading open-source cross-platform tool-kit.