So according to IGN, if you cure your lycanthropy you'd be able to become a werewolf again. Is this true? And if it is, are there wild werewolves, or can you just get it from an npc or something again?

Also, are there ultra-dark dungeons now?

Aela with the Companions will give it to you again, but only once.

So be careful with the curing and whatnot...

Aela re-gifts you. Yes, there are wild werewolves. No, they cannot infect you.

Oh I don't really care if they can infect you, as long as they're in! Do you know if there are any dark dungeons like from the gamejam?

theres some darker dungeons but you're lighting settings will determine if they're torch dark like mine