Yes, I meant I don’t know what is happening with WebKit. For example, Gnome Web does not use it as it is but through a “port”:
WebKitGTK is a full-featured port of the WebKit rendering engine, suitable for projects requiring any kind of web integration, from hybrid HTML/CSS applications to full-fledged web browsers. It offers WebKit’s full functionality and is useful in a wide range of systems from desktop computers to embedded systems like phones, tablets, and televisions. WebKitGTK is made by a lively community of developers and designers, who hope to bring the web platform to everyone.
My guess it there is another “port” for QT and, being the world we live in, the two “ports” aren’t syncronized with the main project and to each other.