4.4TP已经release；
新特性：
* WebKit integration
* Phonon integration
* Enhanced XML support (QtPatternist project)
* Concurrency framework (QtConcurrent project)
* Interprocess communication framework
* Widgets on GraphicsView
* New help system
* Improved printing support
VC2005编译，晕，一个下午还没编译到例子呢
