Does anyone know why chuck is going to have any new episodes for a few weeks

It's because Chuck was only ordered 13 episodes, but then after they had already made those 13 episodes as a season, they got ordered 6 more. So, they are making the 6 more episodes another small arc-like season. I'm calling it season 3.5. So, because of this, Chuck is taking a short break to make it seem like kind of another short season.