The confusion- yeah... that's Adam Poot's fault.
The first released version of Kingdom Death is what Adam refers to as "version 1.3." We don't really know why he picked that number, but there it is.
He released a couple card replacements online prior to the 2nd kickstarter. According to Adam, these bring the game into 1.4 status.
The kickstarter for the second printing of the game will deliver "version 1/5."
I get the impression that these numbers are helpful for internal playtesting (I've heard such things from other company's playtesting).
However, there's only been 1 version of the game released to date, and the Kickstarter will deliver the 2nd (or an update pack to bring some of us into the 2nd ed).