Qt is actively being ported to the two biggest (at the time) mobile ecosystems: Android and iOS. Here are two relevant blog posts from digia conserning this task: Android and iOS.
This promises very exciting times for all the Qt developers, as we are given an access to a huge audience. I think that Qt5 has all the ingredients for a major breakthrough as the best development platform for mobile devices. It's not just that we CAN now create sweet graphics, but because development is so FUN! (I'm referring to QML with the fun part).
