There's DLC featuring Squad 7 from the first game: https://www.youtube.com/watch?v=rin8pjiHYl4
Yeah I really wanted the Selvaria one. Wish she would've been in the main game. Kind of makes me want to purchase the original because I think there was one mission where you get to control one of the good guys as a Valkyria (not saying who due to spoilers).
Owner of PS4 Pro, Xbox One, Switch, PS Vita, and 3DS