Qt 4.7.2 has now been released. This is a maintenance release which contains bug-fixes based on feedback and contributions since the Qt 4.7.1 release back in November. It also marks the official release of Qt Quick.
Qt Quick is a new feature within Qt that makes it easy to create light-weight apps and UIs. It contains the new QML language, the Qt Declarative module, and new tooling in Qt Creator to easily build apps.
Thank you to all of you that have provided bug reports and/or bug fixes since the Qt 4.7.1 release, some of these will have already been incorporated for Qt 4.7.2 and there will be more coming in future releases. If you want to see what has changed since Qt 4.7.1 then you can see the Qt 4.7.2 changelog and the list of bugs reported fixed for Qt 4.7.2 in the Qt Bug Tracker. For a more detailed view then you can compare the changes between the v4.7.1 and v4.7.2 tags in the public git repository.