Sorry if i'm posting this in the wrong area, but I'm just curious as to how updates will work. Does Humble Bundle add them to our download pages, do they show up on here or does the game update automatically?
Just keep your humble bundle email in a safe place just in case (I have a separate folder in my email where I keep these types of emails safe from accidental deletion).  If you see people talking about an update then you should be able to get it through your humble bundle personal page.
Just speculation here also.
Edit - Yep, dev said on twitter that all updates will be available through your Humble Bundle page - so don't lose that email (and you might want to write down the link to your personal page).