Working on this now. It's trickier due to what I said above. Hopefully not as painful as what I had to do with Sparrow, though.
Also, I think it makes sense to optionally allow you to display the "preloader" when switching scenes and dumping/reloading data, but this is entirely up to you. If you don't do it, it will be somewhat like 2.0 - it'll pause for a bit on a slower device. I notice many games nowadays doing this (as if they're dumping everything out and reloading it back in?), so it's an accepted norm.