Trolltech has announced the availability of the second Qt 4 Technical Preview. Key highlights include support for AT-SPI, bringing accessibility to the Unix and Linux desktop for people with disabilities. Read the online documentation or jump to the download page.
Together with this tech preview, Harald Fernengel released a preview of a brand new set of D-BUS bindings. Using Qt's meta object system, broadcasting signals and invoking methods in other applications is now a breeze. D-BUS signals can be connected to any slot. No preprocessor and no special wrapper classes are necessary. You can download the library at the Qt D-BUS tutorial page.