So strange there's no notch in the main picture on the announcement. The top bezel does not look the same as on the product page either, even aside from the notch, it's too thick. edit: the very last picture in the article also shows the wrong bezel. So strange...
There's no notch on the M1 Air. Are you expecting one? Notches are terrible and are enough all alone to make me change what I'll buy.
Considering the way MacOS's top menu works, notches are a non-issue and you're ultimately getting more screen real estate than the non-notched variants.