My prayers have been answered, hopefully. I hope they'll let you write code that isn't just Swift Playgrounds++ and they let you write code in other languages and run it in a container, then I don't have to carry the laptop around as much (presuming someone makes a good keyboard for the iPad that I can use on my lap...).
The Swift Playgrounds app has meant that a swift compiler has existed on the iPad for years. Will the XCode app mean just Swift, or will it allow for Objective-C and C/C++?
It will be interesting to see how this progresses.