I left this comment at the blog:

Perhaps coding will look like minecraft, where you dig physical paths for the water, for the chickens, and hunt down bugs with bows and arrows. Modern tablets with no keyboards do minecraft just fine (my 8 year old and all his friends are completely addicted to minecraft). Also, they can join lan games, and work in the same virtual world. This may allow multiuser programming, no? Weird thoughts. They won't call it programming either, they'll call it something like flowcraft or some such.