The Qt Project has released Qt 5.0 Beta and is calling platform developers, OS integrators and advanced Qt application developers to test and send us feedback. Qt 5 Beta is based upon the work from a core of approx. 250 developers.
Binaries are available for installation on the reference platforms: Linux (X11 and Wayland), MS Windows and Mac OS X. Unofficial Qt 5 packages are also available for other platforms like QNX, QtonPi and the main Linux distributions (Ubuntu, Debian, Fedora).
The goal is to have a final release in November. Current focus areas include testing of the revamped Qt Quick and Qt WebKit, Qt Widget application API compatibility between Qt 4 and Qt 5, and the stability and good performance on MS Windows and Mac OS X.
Download [releases.qt-project.org]
Read more: http://qt-project.org/wiki/Qt-5-Beta