they said a week after launch so I would expect it by the end of the week.

Now the question is did anyone working on that project need to be pulled to help address the setup and testing of the new servers which may have delayed this project. I wouldn't expect the team doing this type of programming to be used for that, but if they had the skills they may have been shuffled in to get things ready faster as getting servers ready is a lot higher on SE's priority than the iOS app for in-game items.