Again with this teaching?? The GB really are pathetic. They need to just admit they are wrong and leave it alone. But they can't..
This new teaching is supposed to inspire fear in the newer JW's, that 'the end' really is close (uh, this time around).
For example, my sister (still a JW) tells me that in her congo there are plenty of those who believe the end is close because the anointed won't all pass away and that they're all getting old. This teaching will only reinforce that fear. But the ones who think this way are newer JW's. Most of these people weren't JW's during the 60s and 70s, so they weren't around for 1975. And they also weren't around when the WT started talking fear about 'apostates' and the 'generation not passing away'. They weren't around for the first cold chill in 1995, when the WT changed the generation teaching.
The other reason I think they started teaching this is because the GB is trying to make itself look as if it knew all along that this is what Jesus meant, and that they weren't really wrong in 1995.
In the end, it's all prophetic fluff.