Hey, folks. Didn't know if everyone else already knew this, but I just figured it out and wanted to share. 
At Gen Con, some folks commented about typos and other errors in both the Enhanced Edition and Infernal Relics rulebooks. It turns out that the online versions are actually updated with the corrections! 
That’s shiny!
I've printed out versions for my travel box, so I have extras without the errors (although I'll admit we rarely refer to the rulebook except when teaching new folks how to play 
).