While most talk about the end of reporting for publishers, I think the doctrinal change is even bigger.
Repentance after start of GT still possible?
What does that mean for the judgement message, they pushed a bit lately?
Will that be really just before Armageddon?
What does it mean for the preaching now? If they are seriuos about human lifes to be saved, the main message has to be, that Babylon the great will be destroyed. Even if most will not believe it now, they have to remember who foretold it, so they can change their mind and be saved, when it really happens.
Also how is the scripture in Revelation 18 to be understood? "Babylon has fallen, get out of her." Was the falling not 1919 but in the near future? Any more doctrinal changes in line with this big turnaround are necessary.