Yes, let's get back to Zelda
Anyway, I wouldn't be surprised if they've been experimenting with it for a while, now. They could get everything recorded, and processed, and stuff, but if they end up not liking it, it's easy to just scrap it instead of working until it sounds good.
But I'm not saying that I think they've been doing it. Just that if they announced that they've been experimenting for a long time, it wouldn't be all too shocking to me.