My hope/dream/wildest imagination is if a group of hackers came together and ported Qt to WP7.
That would be the most distruptive thing that can ever happen to Mr Elop's plans with Microsoft.
In fact I'd wager so far as to say that Qt is ported to WP7, then there is actual merit to joining up with Microsoft (from Nokia's point of view).
Suddenly, Qt isn't just on a soon-to-be-dead Symbian, a niche-market Maemo and yet-to-be-born Meego, all of which are Nokia supported - it will be on a brand new platform that has thus far rejected everything other than .NET.
Given that the world is now looking at Nokia and Microsoft, this new direction will not go unnoticed.

If Qt on WP7 were announced soon enough this entire episode may turn out to be an astounding PR win.

If only...