Fawk I remember at some point Modest Mouse was working with Big Boi but idk if anything ever came of it. Based on their past few albums I probably wouldn't like it anywaysI don't think they're working on a new LP. If I remember correctly, Big Boi just said he's working on something with Kate Bush. It's probably her featuring on one of his tracks, which is cool since he has been wanting that forever.
Fun fact, I have 6 Kate Bush LPs hanging on my wall. I'm pretty much a superfan, however you'd classify that.