While he did announce a delay of one to two weeks for patches 1.16a and 1.17, Yoshi-P also announced that they would continue to do as much groundwork for future content as possible. I imagine the delay will not be too noticeable in the long run. I suppose we'll see where things are headed in the next few hours; they promised a re-evaluation of how long the servers will be down on the 22nd. It's still a very real possibility that their development team will be back to full power before the energy restrictions are lifted and they can get all the servers back online.