I think it's time to start this discussion.
The big news will be Mac OS Ax. If ARM Macs are coming anywhere between now and the first half of 2021, then Mac OS has to support ARM beginning in June so developers can be ready.
iOS 14 will show off features that will tie it in very tightly with Mac OS Ax.
New 14" MacBook Pro's will be announced (either at WWDC or immediately before).
Apple will talk extensively about its roadmap for Mac Ax.
Ken will salivate!