Lisa will NOT be returning to the show in season 8.
Everyone except Hugh’s contracts have expired and Lisa has chosen to depart from the show.
Robert Sean Leonard is going to be in a few episodes, but he will have a much smaller role than he currently does.
I learned this all a while ago, but have been slow to actually posting it. I love house and Cuddy, not just as someone who ships them, but as a true fan of the show. I wish Lisa the best with her life after Princeton Plainsboro.