# 470 - Qt 5.15.3 is now available to open source users. - Qt Design Studio 3.1 has been released:https://www.qt.io/blog/qt-design-studio-3.1-released - There is a security advisory for QLockFile, QAuthenticator on Windows systems:https://www.qt.io/blog/security-advisory-qlockfile-qauthenticator-windows-platform-plugin Posted by Jon Trulson Tags: Qt