The second beta of QT version
4.5.1 has been released (9/18/2009). This is a cross-platform
application and UI framework. Applications that use QT include
VirtualBox, SMPlayer, Psi, Scribus, and LyX. You can follow the
progress on the roadmap and milestones for the project. If you would like to contribute to this port, you can buy sponsoring units from Mensys; 100% of the money goes to netlabs.org.
Source: OS/2 Warp News and Rumors