Since Marc posted on this, I guess I should too. I recently accepted a new job at the Center for American Progress where I'll be working with the team that puts together ThinkProgress, the Wonk Room, and the Progress Report. From a reader's point of view, this probably won't make a huge difference -- the blog will have a different URL and a different design so it'll fit in with the ThinkProgress family, but the blog has changed URLs and designs several times in the past so that's nothing new.
Some people have been asking me questions about why I'm leaving the Atlantic, but really I'm just leaving the Atlantic because that's what you need to do to take a new job. I think CAP is a great organization, I miss the sense of collegiality that comes from working with like-minded colleagues on a shared enterprise, I think I can help advance their mission and when it turned out they felt I could too and were willing to make me an attractive offer, I was thrilled to take it -- no beefs with existing employer required. The new site should launch in early August.