I've said for a while that the correct way to port from QtQuick 1 to QtQuick 2 is to look it over with a critical eye and not just change a 1.1 to a 2.0. That said, here's a Qt.labs.particles 2.0 for when it's not worth the effort of doing it right:

https://gitorious.org/aalperts-automatons/qmlhelpers/trees/master/Qt.labs.particles.2

It's intended as a drop in replacement for a Qt.labs.particles 1.0 import, after you've changed the rest of the scene to QtQuick 2.0. It's basically just a bunch of aliases to the new properties in the new structure. Almost all of the features are easily accessible under a new name, or the same name, just under the new Emitter/Painter/System split.

I'll be optimistic and assume that everyone will use it only to view the source as a guide on how to get started replacing particles 1 elements with particles 2 ones ;) . 
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