The JW's have predicted the end of the world before. They were even stupid enough to predict certain dates. The first was 1914. Then 1925. Then 1975. Of course, they were wrong every time. It looks like they finally learned their lesson by not including any specific date this time.
I found a documentary on YouTube about an hour long on the JW's. Since I'm already on the topic, I might as well share it here. It's a pretty good documentary but unfortunately at the end, they put in "pro-Christian" crap.