Among the major changes added in Qt 5.9, we can mention the ability to fully leverage C++11, better Wayland multi-process support, the implementation of a new set of Qt Quick Controls, a brand new graphics architecture, Qt 3D, an all new configuration system, and improved performance on embedded hardware. Best of all, Qt 5.9 launches officially today as a long-term supported (LTS) release, replacing the Qt 5.6 branch, which means that you can finally upgrade from Qt 5.6 directly to Qt 5.9 if you want to receive maintenance updates for the next three years to come.
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