Qt 4.5 is the upcoming new version of the Qt cross-platform application framework for desktop and embedded development. Preview packages are now available to commercial and open source users for download, testing and feedback.
The Technology Preview provides a first, complete look at new Qt features, including:
* Upgrade of the Qt WebKit integration to utilize the latest upstream version of the WebKit browser engine
* New benchmarking library and re-engineering of key components for improved performance
* Support for 64-bit applications on the Mac platform with the Cocoa API
* Debugger for the Qt Script scripting engine
* XSL-T support
* Open Document Format support
* Improved proxy support
* Various improvements to Qt Designer
* Improved integration in GTK+-based Desktops
