Honestly, I just stopped expecting things from the events now. Archive and Anniversary both had us holding our breaths for something but end up going ‘oh…okay…’.
It is very Diablo-esque so I think it has always been something to do with that. Perhaps they were going to announce something around this time regarding the mobile app but had to delay it for some reason thus delaying Overwatch announcing it. That’s the problem when you start tying different games together, if one messes up and falls behind, the other does too.