//offtopic:

As you know Nokia took a decision to abandon Symbian as well as MeeGo in favor of WP 18 months ago. Symbian fades but there are still plenty of Symbian devices on the market and Nokia promised to supported it until 2016.

Qt 5 is still in Beta. Digia recently finished the acquisition of Qt from Nokia so the future of Qt depends mainly on Digia's decisions. We should just wait and see what will happen