After talking to Apple CEO Tim Cook, Musk said that Apple wasn't threatening to pull the app from the store. Musk said it was a misunderstanding and that Tim was clear that Apple never contemplated doing so.
Earlier in the day, Musk claimed that Cook gave him a tour of Apple's campus. In a video, you can see a shadow of Musk and another person.
It's not clear what else they might have discussed. I am wondering if Musk aired his grievances about the cut. He deleted a meme that said he would go to war instead of paying Apple's fee so that he could stay on the nightstand.