best response confirmed by Tom Mucha (Occasional Contributor)
Hey Tom, I won't go into details, but there are a lot of dependencies over multiple teams at Microsoft to do this right. Whenever you deal with things like identity, auth, connectivity - you have to be really careful and not break anyone or anything. That's always our goal, and sometimes the trade off is the time it takes. That's true in this case. We're working hard on it I promise.