Not even necessarily "later". They showed that the visionOS already supports existing Continuity and SharePlay functionality in iOS/iPadOS applications, which a

Not even necessarily "later". They showed that the visionOS already supports existing Continuity and SharePlay functionality in iOS/iPadOS applications, which are features already built for sharing views of the same apps across devices and/or between people. It's somewhat limited which applications support those APIs today, but it is still an interesting amount more than "nothing". (ETA: That seemed a subtle theme across the WWDC keynote to me, as increased SharePlay support in first-party apps and select third-party partners was many of the things they demoed across the iOS, iPadOS, Car Play, and macOS updates.)