I can understand your excitement, but I doubt it, since it makes at least one final departure scan before leaving the continent, either in Shanghai, Seoul, or both. In my case the "arrival" at Zhengzhou matched the takeoff time for 5X11 from Shanghai for some reason and next thing I saw was "arrival / departure scan" in Incheon/Seoul.
Also UPS is doing the bare minimum to provide a date, meaning that they want to make sure it doesn't come much earlier for you to be home.
Notice that the UPS status is usually already in the proper time zone, it should show the exact time any flight took off.
And UPS is doing the bare minimum to ensure a delivery date, don't take the date for serious, unless the plane really took off or you have at least a departure scan in Shanghai / Incheon, it is still there.
There's also no too early but definitely no "too late", if your package says Jul 27 but the plane didn't take off (see dep. scan) to arrive at least the day before (in the evening in cologne, in this case 26th), it could change to "delivery date will update" meaning you are bond to the departure scan to know when it will arrive later.
I saw some folks here having exactly this issue, mechanical problem which is usually staff problems. In the worst case the waggon with all the packages for that day was mistaken / misplaced, not able to be put in the plane in time, set aside, and in the worst worst case I saw people waiting weeks for their delivery date to update after this