Qt 4.2 introduces many new features as well as many improvements and bugfixes over the 4.1.x series. For more details, see the online documentation which is included in this distribution. The documentation is also available at http://qt.nokia.com/doc/ The Qt version 4.2 series is binary compatible with the 4.1.x series. Applications compiled for 4.0 or 4.1 will continue to run with 4.2. **************************************************************************** * General * **************************************************************************** Qt 4.2 contains a lot of changes, which will be fully documented in the final release. For this tech preview, please concentrate on the new features and provide feedback on the qt4-preview-feedback mailing list (see http://qt.nokia.com/lists/ for details)