The new Qt 3.1 upgrade features hundreds of enhancements, TrollTech claims. Among the features are better ActiveX support, Motif integration, while for MacOSX you will find integration with the Appearance Manager, anti-aliased text drawing, and user settings. The Qt OpenGL support for OSX is also greatly improved, and uses the hardware-accelerated drivers. Also, Qt 3.1 offers more classes available for multi-threading, thereby optimizing performance. Elsewhere, GTKmm 1.3.21 for GTK+ 2 was released.