Reducing shutter speed to reduce blur isn't new (https://www.dpreview.com/articles/1528656007/notimagestabilization https://www.dpreview.com/articles/1528656007

Reducing shutter speed to reduce blur isn't new (https://www.dpreview.com/articles/1528656007/notimagestabilization https://www.dpreview.com/articles/1528656007/notimagestabili...), accumulating sensor exposure is how DSLRs work, and aligning frames is how image stabilization works. It might not be what we call "HDR", but there's nothing new here. The combination in a phone camera sounds nice.