Personally, I don't know what "new date" the JW's have come up. No doubt, it's yet another ploy to keep everyone scarred out of their wits, clinging to the Borg Mother with all their might.
I have done much research myself, and there is a date that keeps coming up, and that is 2012. From everything I've heard, there will be great changes that come to us then. The age of technology will have fizzled to a halt as well.
However, I don't believe this event will be Armageddon. (I think perhaps that Armageddon has come and gone already.) This new event will be a very good thing for the entire universe, and you can certainly believe that it has nothing to do with saving all the JW's and destroying everyone else.
In my research of the Mayans, where our calendar originated, they have a prediction for 2012. Quite interesting. Other more scientific evidence as well from modern areas, and also the predictions of prophets like Edgar Cayce, also show the year 2012 as significant.
I suppose "time will tell". Looks like the majority of us will be around here then.
Sentinel/Karen