Two weeks ago (14) we got Meastro challange as we know blizz doesn’t update servers more often than two weeks. Thats why we couldn’t get it week ago (21). Why devs would add olimpics today? Because they are already late compared to last years.
Another reason to add summer games today? Blizz has scheduled another exp. card update for today.
Why this is important? Blizz can update servers every two weeks. That means if we don’t get olimpics tonight, the next nearest date to add it is 11th of August, but it’s almost and of summer so I don’t think blizz would add it so late.