Qt 4.4.3 is a rebranding-only release. In all other aspects, it is the
same release as Qt 4.4.2. It maintains both forward and backward
compatibility (source and binary) with Qt 4.4.2, 4.4.1 and 4.4.0.
In June 2008 Nokia acquired Trolltech ASA to enable the acceleration of their cross-platform software strategy for mobile devices and desktop applications, and to develop its Internet services business. On September 29, 2008 Nokia renamed Trolltech to Qt Software.