Difficult to believe. Not saying it's untrue, however would be very unlike ND.
In the past, and this year as well, they have wanted at least a semester of grades but really prefer a full year, along with psat/sat, and other info before a consideration would be made. And also pretty consistent that nothing happens until after freshman year.

If it's an offer great, but far too many times in the past people confuse interest with offer or impending offer, etc...