Do you know of anything that happened between 2016 and 2017’s releases that you feel is not covered well enough in this release? This is incredibly important material, but I don’t know of anything new that warranted an update after last WWDC. I’m currently going with the idea of having this course updated after Swift 5 comes out, because I know that will represent a major change for concurrency. During WWDC, I plan to assess if that release will take too long. If it will, then an update for iOS 12, Xcode 10, and Swift 4.2 or so might make more sense.