I've made a pretty big update to the Rules and Clarifications PDF, which you can find on my site (www.spiffworld.com/sotm). Changes include:
1) I've removed the couple of instances of errata I had now that the cards have been updated in the Enhanced Edition. Instead, each hero, villain, or environment lists which of their cards have been updated in the EE, which you can look up in...
2) A whole new section which lists every card that's been updated in the EE, with their old text and new text shown side by side. This was an interesting exercise as I typed out the changes. In some cases, the changes were very minor and in some cases were a much bigger deal, some of which I'm surprised we haven't seen more QQ about here on the forums (for example, Wraith can no longer prevent irreducible damage like she could before). It's an interesting read, to see the changes laid out like that.
3) I added the clarification about what "immediately end your turn" means for Fanatic's "Prayer of Desperation" and Nightmist's "Mist-Fueled Recovery".
4) I added the clarification that if Mr. Fixer is able to play "Overdrive" when it's not his turn, he still gets to use his "Strike" power twice on whoever's turn it is when the card is played.
5) I added a note that says that some villain keywords are missing from the oversized villain cards that were part of the latest Kickstarter.
6) I added the clarification that if a hero has been infected by Plague Rat's "Infection" card, that card is not removed when the hero is incapacitated.
7) I added a clarification that even if an environment card doesn't specify the source of damage (i.e. it says "deal XYZ damage" instead of "this card deals XYZ damage") the source of the damage should be considered to be the environment itself, or if it's important, the card itself.
8) I added a note saying that proper rules of arithmetic apply when adding bonuses, so if you have some card that does X damage, where X = the number of somethings in play plus 2 and there are zero somethings in play, the card will still do 2 damage.
9) I added a section in the "Other" general rules section about skipping your turn.
10) I'm including the new EE official rule book now.
I still don't have my Infernal Relics cards yet, obviously, so I haven't updated the Card List to include those, but I will eventually.