請問大師們：不先通知打指紋，要去問嗎（不太明白）？

N-400交上去，10天後收到移民局來信說：收到申請，如你的個人情況有變化，要通知移民局。然後就說，“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."

怎麽不是先通知按指紋呢？還是很快會有另一通知讓按指紋？多謝。