请问大师们：不先通知打指纹，要去问吗（不太明白）？

N-400交上去，10天后收到移民局来信说：收到申请，如你的个人情况有变化，要通知移民局。然后就说，“You will be notified of the date and place of your interview when you have been scheduled by the local USCISoffice. You should expect to be notified within 100 days of this notice."

怎么不是先通知按指纹呢？还是很快会有另一通知让按指纹？多谢。