As you may know, Qt has been a cross-platform toolkit from day one, and supports many more mobile platforms than just Symbian and MeeGo. Here is a list of some of the different mobile platforms Qt runs on today:
QNX (Blackberry Playbook)
...and there have been reports on success getting it running for Bada and Amazon Kindle as well. Go to the Qt booth to see more apps running across both desktop and mobile platforms.