According to Delany, "Katherine and Mike are going to move in together. That's huge. We have shot a few episodes of cohabitation already, and it has been a tremendous amount of fun." Delany goes on to remind us, "Fans of the show since the beginning will remember that Mike used to live in the house that I live in now in, so it is a sort of homecoming for him."
Delany warns us though, "But like all things on Wisteria Lane, it will have its own set of challenges. We aren't going to be living in complete bliss. Susan has issues, for one. And Dave is still around trying to get revenge."