Quote Originally Posted by Awesomeness View Post

Depends on your definition of “supported”. If by that you mean you can go to a company and hire it to offer support, then yes, the choices are limited because most bindings are community-developed.
Qt 5 is also still young. Many bindings are still not ported to Qt 5. Qt 5 comes with JavaScript bindings out of the box, obviously.
The difference is that using GObject Introspection the language bindings come more or less for free. No one has to actively develop specific library bindings. The language you use just need an implementation of GI.