Board Thread:General Discussion/@comment-27121579-20151030110310/@comment-226878-20151115002005

Basically because the photo shows Summer and Qrow with two other characters, given that Yang said Summer and Qrow were on a team with her mother and father, it's an inescapable fact that the red-clad woman is Yang's mom Raven Branwen whose name was confirmed via the Breach credits and the blonde man is Taiyang whose name was mentioned during Field Trip.