There were a few announcements before WWDC that made me wonder if this was happening. Guess it didn't happen in time before WWDC!

There have been numerous proposals for a NuGet style package repository - at one point it seemed GitHub was going to be leading the efforts. I'm hoping this is Apple's way of moving back towards named package resolution instead of Git repo URLs.

https://swiftpackageindex.com/blog/swift-package-index-joins-apple