There are a couple interesting entries for the End Times now on Amazon for both the End Times Book 4 and Book 5. The most interesting thing about these is they are real is the dates for the releases, which puts them out quite a ways.
Take a look at these, and of course head on over and take a look for yourself. Please consider these rumors, its very hard to tell if these images have any truth behind them.
Here are the links for both images