Support for the GTK4 library has been added to the main branch of the Epiphany web browser developed by the GNOME project based on the WebKitGTK engine and offered to users under the name GNOME Web. Epiphany's interface is closer to the modern requirements for the style of GNOME applications, for example, the textured highlighting of buttons in the panel has been discontinued, the appearance of tabs has been changed, and the corners of the window are more rounded. Test builds based on GTK4 are available in the gnome-nightly flatpak repository. In stable releases, the GTK4 port will be part of GNOME 44.
Source: opennet.ru