Today we have released Qt 5.5.1, the first update to Qt 5.5. In addition to improvements and fixes to Qt functionality, it also packs in new Qt Creator 3.5.1.
Qt 5.5.0 released in July introduced many new features and refinements to existing functionality, and the Qt 5.5.1 patch release provides close to 1.000 improvements and fixes on top of it. One of the key drivers for Qt 5.5 has been quality and maturity and we have continued to address items reported by the Qt users with Qt 5.5.1. I am really happy about all the feedback and especially all the contributions we have received.
Qt WebEngine in Qt 5.5.1 includes a couple of security fixes for known vulnerabilities. The list of important changes in Qt 5.5.1 can be found from the change logs. Note that only the most important items are listed in the change logs, for full list of changes it is best to check the git logs.
If you are using the online installer, Qt 5.5.1 and Creator 3.5.1 can be updated using the maintenance tool. Offline packages are available for commercial users in the Qt Account portal and at qt.io/download for open-source and commercial evaluation users.