There's two development teams, technically--according to Swen. One working on revising act I during early access. These changes we'll likely actually see. Regarding save wipes, he said these would occur if a change in story/quest sequence is made. So, we could see Act I change and with changes there's the possibility of new content, if small.
The other dev team is working on finishing the game. Both teams are working with influence from player feedback.
That said, I wasn't expecting much of an update this week. I suspect they'll queue up bigger changes for major updates (maybe once a month?) to keep early access people coming back. If they rapid released updates, the community would get bored and entitled. If they pace them out month at a time it would give early access people time to test out the new content, take a break, and come back fresh for the next one. (I say, given that most of us seem to have cleared EA more than once and it's only been a couple weeks. I'm thinking of taking a break just so I don't burn myself out on it and will resume after the next major update.)
