Hopefully it's Mer, Qt 5 and a fantastic UI that's as close to N9 Swipe as they can get away with (or license?).

I hope that they have graphic and industrial designers that will create something as groundbreaking and stand-out as the N9 that will elevate them from device(s?) that developers will love to something that will entice average consumers as well.

And hopefully keep a developer story similar enough to N9/Symbian/BB10 to get some cross-pollination of Qt apps?