Despite the orgs claims that the end is closer than ever, the reality is that time is their friend.
It's already been 28 years since the generation change of 1995. A jw would have to be almost 40 years old to remember the original doctrine of the 1914 generation with any significance.
This seemingly insignificant editing of how they describe the events of 1914, using the word 'about', seems logical as they will have to gradually move away from the whole generation thing eventually. The gb know it will take decades.