From what I've been observing....
Quality apps (commercial & non) have been popping-up at quite a respectable rate.
Despite the limited resources thrown into fostering that.*

Of course we'll probably never get the best games from some of the biggest houses.
And the N9 won't have the grunt to play the most demanding one's anyway.

But it's definitely progressing way better than the N900 was at the same stage.
[Which is to be expected, considering N900 was mainly seen by Nok as a learning ph]

Then there's the possibility Alien Dalvik will be made available for purchase.
That's still very much an unknown at this stage though...

*compared to what was planned before the switch to WP.