A credible leak has been that Xcode is coming to iPad (and iOS?). Not sure how I feel about it, I'd prefer more time be spent improving it for Mac use (where, in my opinion, 99% of developers will do their work anyway).
My guesses from the software side:
- A new game framework, or a massive overhaul to SceneKit. It hasn't seen much love lately, and RealityComposer has a really nice API, but is only for AR. Something new is needed or SceneKit is dead IMO.
- SwiftUI will probably see a massive amount of changes. For new controls I think we'll see a collection view and color picker. Hopefully a lot more - it's nice but has a lot of rough edges/hacks currently.